Parker O-Rings Size Chart for AS-568A Aerospace O-Rings

What O-Ring Size Do I Need?

Reference the Parker o-rings size chart to help determine the size for your application. The chart provides dimensions, both nominal and metric, for standard (AN) shrinkage materials ONLY. These correspond to AS568A dimensions.


Parker Series 2-0XX O-Ring Sizes
Parker Size AS 568A Size ID (nominal in.) OD (nominal in.) W (nominal in.) ID (actual in.) ± W (actual in.) ± Basic Volume (Cu. in.) ID (actual mm.) ± W (actual mm.) ±
2-001 -001 1/32 3/32 1/32 .029 .004 .040 .003 .0003 0,74 0,10 1,02 0,08
2-002 -002 3/64 9/64 3/64 .042 .004 .050 .003 .0006 1,07 0,10 1,27 0,08
2-003 -003 1/16 3/16 1/16 .056 .004 .060 .003 .0010 1,42 0,10 1,52 0,08
2-004 -004 5/64 13/64 1/16 .070 .005 .070 .003 .0017 1,78 0,13 1,78 0,08
2-005 -005 3/32 7/32 1/16 .101 .005 .070 .003 .0021 2,57 0,13 1,78 0,08
2-006 -006 1/8 1/4 1/32 .114 .005 .070 .003 .0022 2,90 0,13 1,78 0,08
2-007 -007 5/32 9/32 3/64 .145 .005 .070 .003 .0026 3,68 0,13 1,78 0,08
2-008 -008 3/16 5/16 1/16 .176 .005 .070 .003 .0030 4,47 0,13 1,78 0,08
2-009 -009 7/32 11/32 1/16 .208 .005 .070 .003 .0034 5,28 0,13 1,78 0,08
2-010 -010 1/4 3/8 1/16 .239 .005 .070 .003 .0037 6,07 0,13 1,78 0,08
2-011 -011 5/16 7/16 1/16 .301 .005 .070 .003 .0045 7,65 0,13 1,78 0,08
2-012 -012 3/8 1/2 1/16 .364 .005 .070 .003 .0052 9,25 0,13 1,78 0,08
2-013 -013 7/16 9/16 1/16 .426 .005 .070 .003 .0060 10,82 0,13 1,78 0,08
2-014 -014 1/2 5/8 1/16 .489 .005 .070 .003 .0068 12,42 0,13 1,78 0,08
2-015 -015 9/16 11/16 1/16 .551 .007 .070 .003 .0075 14,00 0,18 1,78 0,08
2-016 -016 5/8 3/4 1/16 .614 .009 .070 .003 .0083 15,60 0,23 1,78 0,08
2-017 -017 11/16 13/16 1/16 .676 .009 .070 .003 .0090 17,17 0,23 1,78 0,08
2-018 -018 3/4 7/8 1/16 .739 .009 .070 .003 .0098 18,77 0,23 1,78 0,08
2-019 -019 13/16 15/16 1/16 .801 .009 .070 .003 .0105 20,35 0,23 1,78 0,08
2-020 -020 7/8 1 1/16 .864 .009 .070 .003 .0113 21,95 0,23 1,78 0,08
2-021 -021 15/16 1 1/16 1/16 .926 .009 .070 .003 .0120 23,52 0,23 1,78 0,08
2-022 -022 1 1/8 1/16 .989 .010 .070 .003 .0128 25,12 0,25 1,78 0,08
2-023 -023 1 1/16 1 3/16 1/16 1.051 .010 .070 .003 .0136 26,70 0,25 1,78 0,08
2-024 -024 1 1/8 1 1/4 1/16 1.114 .010 .070 .003 .0143 28,30 0,25 1,78 0,08
2-025 -025 1 3/16 1 5/16 1/16 1.176 .011 .070 .003 .0151 29,87 0,28 1,78 0,08
2-026 -026 1 1/4 1 3/8 1/16 1.239 .011 .070 .003 .0158 31,47 0,28 1,78 0,08
2-027 -027 1 5/16 1 7/16 1/16 1.301 .011 .070 .003 .0166 33,05 0,28 1,78 0,08
2-028 -028 1 3/8 1 1/2 1/16 1.364 .013 .070 .003 .0173 34,65 0,33 1,78 0,08
2-029 -029 1 1/2 1 5/8 1/16 1.489 .013 .070 .003 .0188 37,82 0,33 1,78 0,08
2-030 -030 1 5/8 1 3/4 1/16 1.614 .013 .070 .003 .0204 41,00 0,33 1,78 0,08
2-031 -031 1 3/4 1 7/8 1/16 1.739 .015 .070 .003 .0219 44,17 0,38 1,78 0,08
2-032 -032 1 7/8 2 1/16 1.864 .015 .070 .003 .0234 47,35 0,38 1,78 0,08
2-033 -033 2 2 1/8 1/16 1.989 .018 .070 .003 .0249 50,52 0,46 1,78 0,08
2-034 -034 2 1/8 2 1/4 1/16 2.114 .018 .070 .003 .0264 53,7 0,46 1,78 0,08
2-035 -035 2 1/4 2 3/8 1/16 2.239 .018 .070 .003 .0279 56,87 0,46 1,78 0,08
2-036 -036 2 3/8 2 1/2 1/16 2.364 .018 .070 .003 .0294 60,05 0,46 1,78 0,08
2-037 -037 2 1/2 2 5/8 1/16 2.489 .018 .070 .003 .0309 63,22 0,46 1,78 0,08
2-038 -038 2 5/8 2 3/4 1/16 2.614 .020 .070 .003 .0324 66,40 0,51 1,78 0,08
2-039 -039 2 3/4 2 7/8 1/16 2.739 .020 .070 .003 .0340 69,57 0,51 1,78 0,08
2-040 -040 2 7/8 3 1/16 2.864 .020 .070 .003 .0355 72,75 0,51 1,78 0,08
2-041 -041 3 3 1/8 1/16 2.989 .024 .070 .003 .0370 75,92 0,61 1,78 0,08
2-042 -042 3 1/4 3 3/8 1/16 3.239 .024 .070 .003 .0400 82,27 0,61 1,78 0,08
2-043 -043 3 1/2 3 5/8 1/16 3.489 .024 .070 .003 .0430 88,62 0,61 1,78 0,08
2-044 -044 3 3/4 3 7/8 1/16 3.739 .027 .070 .003 .0460 94,97 0,69 1,78 0,08
2-045 -045 4 4 1/8 1/16 3.989 .027 .070 .003 .0491 101,32 0,69 1,78 0,08
2-046 -046 4 1/4 4 3/8 1/16 4.239 .030 .070 .003 .0521 107,67 0,76 1,78 0,08
2-047 -047 4 1/2 4 5/8 1/16 4.489 .030 .070 .003 .0551 114,02 0,76 1,78 0,08
2-048 -048 4 3/4 4 7/8 1/16 4.739 .030 .070 .003 .0581 120,37 0,76 1,78 0,08
2-049 -049 5 5 1/8 1/16 4.989 .037 .070 .003 .0612 126,72 0,94 1,78 0,08
2-050 -050 5 1/4 5 3/8 1/16 5.239 .037 .070 .003 .0642 133,07 0,94 1,78 0,08

Parker Series 2-1XX O-Ring Sizes
Parker Size AS 568A Size ID (nominal in.) OD (nominal in.) W (nominal in.) ID (actual in.) ± W (actual in.) ± Basic Volume (Cu. in.) ID (actual mm.) ± W (actual mm.) ±
2-102 -102 1/16 1/4 3/32 .049 .005 .103 .003 .0040 1,24 0,13 2,62 0,08
2-103 -103 3/32 9/32 3/32 .081 .005 .103 .003 .0048 2,06 0,13 2,62 0,08
2-104 -104 1/8 5/16 3/32 .112 .005 .103 .003 .0056 2,84 0,13 2,62 0,08
2-105 -105 5/32 11/32 3/32 .143 .005 .103 .003 .0064 3,63 0,13 2,62 0,08
2-106 -106 3/16 3/8 3/32 .174 .005 .103 .003 .0072 4,42 0,13 2,62 0,08
2-107 -107 7/32 13/32 3/32 .206 .005 .103 .003 .0081 5,23 0,13 2,62 0,08
2-108 -108 1/4 7/16 3/32 .237 .005 .103 .003 .0089 6,02 0,13 2,62 0,08
2-109 -109 5/16 1/2 3/32 .299 .005 .103 .003 .0105 7,59 0,13 2,62 0,08
2-110 -110 3/8 9/16 3/32 .362 .005 .103 .003 .0122 9,19 0,13 2,62 0,08
2-111 -111 7/16 5/8 3/32 .424 .005 .103 .003 .0138 10,77 0,13 2,62 0,08
2-112 -112 1/2 11/16 3/32 .487 .005 .103 .003 .0154 12,37 0,13 2,62 0,08
2-113 -113 9/16 3/4 3/32 .549 .007 .103 .003 .0171 13,94 0,18 2,62 0,08
2-114 -114 5/8 13/16 3/32 .612 .009 .103 .003 .0187 15,54 0,23 2,62 0,08
2-115 -115 11/16 7/8 3/32 .674 .009 .103 .003 .0203 17,12 0,23 2,62 0,08
2-116 -116 3/4 15/16 3/32 .737 .009 .103 .003 .0220 18,72 0,23 2,62 0,08
2-117 -117 13/16 1 3/32 .799 .010 .103 .003 .0236 20,29 0,25 2,62 0,08
2-118 -118 7/8 1 1/16 3/32 .862 .010 .103 .003 .0253 21,89 0,25 2,62 0,08
2-119 -119 15/16 1 1/8 3/32 .924 .010 .103 .003 .0269 23,47 0,25 2,62 0,08
2-120 -120 1 1 3/16 3/32 .987 .010 .103 .003 .0285 25,07 0,25 2,62 0,08
2-121 -121 1 1/16 1 1/4 3/32 1.049 .010 .103 .003 .0302 26,64 0,25 2,62 0,08
2-122 -122 1 1/8 1 5/16 3/32 1.112 .010 .103 .003 .0318 28,24 0,25 2,62 0,08
2-123 -123 1 3/16 1 3/8 3/32 1.174 .012 .103 .003 .0334 29,82 0,3 2,62 0,08
2-124 -124 1 1/4 1 7/16 3/32 1.237 .012 .103 .003 .0351 31,42 0,3 2,62 0,08
2-125 -125 1 5/16 1 1/2 3/32 1.299 .012 .103 .003 .0367 32,99 0,3 2,62 0,08
2-126 -126 1 3/8 1 9/16 3/32 1.362 .012 .103 .003 .0383 34,59 0,3 2,62 0,08
2-127 -127 1 7/16 1 5/8 3/32 1.424 .012 .103 .003 .0400 36,17 0,3 2,62 0,08
2-128 -128 1 1/2 1 11/16 3/32 1.487 .012 .103 .003 .0416 37,77 0,3 2,62 0,08
2-129 -129 1 9/16 1 3/4 3/32 1.549 .015 .103 .003 .0432 39,34 0,38 2,62 0,08
2-130 -130 1 5/8 1 13/16 3/32 1.612 .015 .103 .003 .0449 40,94 0,38 2,62 0,08
2-131 -131 1 11/16 1 7/8 3/32 1.674 .015 .103 .003 .0465 42,52 0,38 2,62 0,08
2-132 -132 1 3/4 1 15/16 3/32 1.737 .015 .103 .003 .0482 44,12 0,38 2,62 0,08
2-133 -133 1 13/16 2 3/32 1.799 .015 .103 .003 .0498 45,69 0,38 2,62 0,08
2-134 -134 1 7/8 2 1/16 3/32 1.862 .015 .103 .003 .0514 47,29 0,38 2,62 0,08
2-135 -135 1 15/16 2 1/8 3/32 1.925 .017 .103 .003 .0531 48,9 0,43 2,62 0,08
2-136 -136 2 2 3/16 3/32 1.987 .017 .103 .003 .0547 50,47 0,43 2,62 0,08
2-137 -137 2 1/16 2 1/4 3/32 2.050 .017 .103 .003 .0564 52,07 0,43 2,62 0,08
2-138 -138 2 1/8 2 5/16 3/32 2.112 .017 .103 .003 .0580 53,64 0,43 2,62 0,08
2-139 -139 2 3/16 2 3/8 3/32 2.175 .017 .103 .003 .0596 55,25 0,43 2,62 0,08
2-140 -140 2 1/4 2 7/16 3/32 2.237 .017 .103 .003 .0612 56,82 0,43 2,62 0,08
2-141 -141 2 5/16 2 1/2 3/32 2.300 .020 .103 .003 .0629 58,42 0,51 2,62 0,08
2-142 -142 2 3/8 2 9/16 3/32 2.362 .020 .103 .003 .0645 59,99 0,51 2,62 0,08
2-143 -143 2 7/16 2 5/8 3/32 2.425 .020 .103 .003 .0662 61,6 0,51 2,62 0,08
2-144 -144 2 1/2 2 11/16 3/32 2.487 .020 .103 .003 .0678 63,17 0,51 2,62 0,08
2-145 -145 2 9/16 2 3/4 3/32 2.550 .020 .103 .003 .0694 64,77 0,51 2,62 0,08
2-146 -146 2 5/8 2 13/16 3/32 2.612 .020 .103 .003 .0711 66,34 0,51 2,62 0,08
2-147 -147 2 11/16 2 7/8 3/32 2.675 .022 .103 .003 .0727 67,95 0,56 2,62 0,08
2-148 -148 2 3/4 2 15/16 3/32 2.737 .022 .103 .003 .0743 69,52 0,56 2,62 0,08
2-149 -149 2 13/16 3 3/32 2.800 .022 .103 .003 .0760 71,12 0,56 2,62 0,08
2-150 -150 2 7/8 3 1/16 3/32 2.862 .022 .103 .003 .0776 72,69 0,56 2,62 0,08
2-151 -151 3 3 3/16 3/32 2.987 .024 .103 .003 .0809 75,87 0,61 2,62 0,08
2-152 -152 3 1/4 3 7/16 3/32 3.237 .024 .103 .003 .0874 82,22 0,61 2,62 0,08
2-153 -153 3 1/2 3 11/16 3/32 3.487 .024 .103 .003 .0940 88,57 0,61 2,62 0,08
2-154 -154 3 3/4 3 15/16 3/32 3.737 .028 .103 .003 .1005 94,92 0,71 2,62 0,08
2-155 -155 4 4 3/16 3/32 3.987 .028 .103 .003 .1071 101,27 0,71 2,62 0,08
2-156 -156 4 1/4 4 7/16 3/32 4.237 .030 .103 .003 .1136 107,62 0,76 2,62 0,08
2-157 -157 4 1/2 4 11/16 3/32 4.487 .030 .103 .003 .1202 113,97 0,76 2,62 0,08
2-158 -158 4 3/4 4 15/16 3/32 4.737 .030 .103 .003 .1267 120,32 0,76 2,62 0,08
2-159 -159 5 5 3/16 3/32 4.987 .035 .103 .003 .1332 126,67 0,89 2,62 0,08
2-160 -160 5 1/4 5 7/16 3/32 5.237 .035 .103 .003 .1398 133,02 0,89 2,62 0,08
2-161 -161 5 1/2 5 11/16 3/32 5.487 .035 .103 .003 .1463 139,37 0,89 2,62 0,08
2-162 -162 5 3/4 5 15/16 3/32 5.737 .035 .103 .003 .1529 145,72 0,89 2,62 0,08
2-163 -163 6 6 3/16 3/32 5.987 .035 .103 .003 .1594 152,07 0,89 2,62 0,08
2-164 -164 6 1/4 6 7/16 3/32 6.237 .040 .103 .003 .1660 158,42 1,02 2,62 0,08
2-165 -165 6 1/2 6 11/16 3/32 6.487 .040 .103 .003 .1725 164,77 1,02 2,62 0,08
2-166 -166 6 3/4 6 15/16 3/32 6.737 .040 .103 .003 .1790 171,12 1,02 2,62 0,08
2-167 -167 7 7 3/16 3/32 6.987 .040 .103 .003 .1856 177,47 1,02 2,62 0,08
2-168 -168 7 1/4 7 7/16 3/32 7.237 .045 .103 .003 .1921 183,82 1,14 2,62 0,08
2-169 -169 7 1/2 7 11/16 3/32 7.487 .045 .103 .003 .1987 190,17 1,14 2,62 0,08
2-170 -170 7 3/4 7 15/16 3/32 7.737 .045 .103 .003 .2052 196,52 1,14 2,62 0,08
2-171 -171 8 8 3/16 3/32 7.987 .045 .103 .003 .2118 202,87 1,14 2,62 0,08
2-172 -172 8 1/4 8 7/16 3/32 8.237 .050 .103 .003 .2183 209,22 1,27 2,62 0,08
2-173 -173 8 1/2 8 11/16 3/32 8.487 .050 .103 .003 .2249 215,57 1,27 2,62 0,08
2-174 -174 8 3/4 8 15/16 3/32 8.737 .050 .103 .003 .2314 221,92 1,27 2,62 0,08
2-175 -175 9 9 3/16 3/32 8.987 .050 .103 .003 .2379 228,27 1,27 2,62 0,08
2-176 -176 9 1/4 9 7/16 3/32 9.237 .055 .103 .003 .2445 234,62 1,4 2,62 0,08
2-177 -177 9 1/2 9 11/16 3/32 9.487 .055 .103 .003 .2510 240,97 1,4 2,62 0,08
2-178 -178 9 3/4 9 15/16 3/32 9.737 .055 .103 .003 .2576 247,32 1,4 2,62 0,08

Parker Series 2-2XX O-Ring Sizes
Parker Size AS 568A Size ID (nominal in.) OD (nominal in.) W (nominal in.) ID (actual in.) ± W (actual in.) ± Basic Volume (Cu. in.) ID (actual mm.) ± W (actual mm.) ±
2-201 -201 3/16 7/16 1/8 .171 .055 .139 .004 .0148 4,34 0,13 3,53 0,10
2-202 -202 1/4 1/2 1/8 .234 .005 .139 .004 .0178 5,94 0,13 3,53 0,10
2-203 -203 5/16 9/16 1/8 .296 .005 .139 .004 .0207 7,52 0,13 3,53 0,10
2-204 -204 3/8 5/8 1/8 .359 .005 .139 .004 .0237 9,12 0,13 3,53 0,10
2-205 -205 7/16 11/16 1/8 .421 .005 .139 .004 .0267 10,69 0,13 3,53 0,10
2-206 -206 1/2 3/4 1/8 .484 .005 .139 .004 .0297 12,29 0,13 3,53 0,10
2-207 -207 9/16 13/16 1/8 .546 .007 .139 .004 .0327 13,87 0,18 3,53 0,10
2-208 -208 5/8 7/8 1/8 .609 .009 .139 .004 .0357 15,47 0,23 3,53 0,10
2-209 -209 11/16 15/16 1/8 .671 .010 .139 .004 .0386 17,04 0,25 3,53 0,10
2-210 -210 3/4 1 1/8 .734 .010 .139 .004 .0416 18,64 0,25 3,53 0,10
2-211 -211 13/16 1 1/16 1/8 .796 .010 .139 .004 .0446 20,22 0,25 3,53 0,10
2-212 -212 7/8 1 1/8 1/8 .859 .010 .139 .004 .0476 21,82 0,25 3,53 0,10
2-213 -213 15/16 1 3/16 1/8 .921 .010 .139 .004 .0505 23,39 0,25 3,53 0,10
2-214 -214 1 1 1/4 1/8 .984 .010 .139 .004 .0535 24,99 0,25 3,53 0,10
2-215 -215 1 1/16 1 5/16 1/8 1.046 .010 .139 .004 .0565 26,57 0,25 3,53 0,10
2-216 -216 1 1/8 1 3/8 1/8 1.109 .012 .139 .004 .0595 28,17 0,3 3,53 0,10
2-217 -217 1 3/16 1 7/16 1/8 1.171 .012 .139 .004 .0624 29,74 0,3 3,53 0,10
2-218 -218 1 1/4 1 1/2 1/8 1.234 .012 .139 .004 .0654 31,34 0,3 3,53 0,10
2-219 -219 1 5/16 1 9/16 1/8 1.296 .012 .139 .004 .0684 32,92 0,3 3,53 0,10
2-220 -220 1 3/8 1 5/8 1/8 1.359 .012 .139 .004 .0714 34,52 0,3 3,53 0,10
2-221 -221 1 7/16 1 11/16 1/8 1.421 .012 .139 .004 .0744 36,09 0,3 3,53 0,10
2-222 -222 1 1/2 1 3/4 1/8 1.484 .015 .139 .004 .0774 37,69 0,38 3,53 0,10
2-223 -223 1 5/8 1 7/8 1/8 1.609 .015 .139 .004 .0833 40,87 0,38 3,53 0,10
2-224 -224 1 3/4 2 1/8 1.734 .015 .139 .004 .0893 44,04 0,38 3,53 0,10
2-225 -225 1 7/8 2 1/8 1/8 1.859 .018 .139 .004 .0952 47,22 0,46 3,53 0,10
2-226 -226 2 2 1/4 1/8 1.984 .018 .139 .004 .1012 50,39 0,46 3,53 0,10
2-227 -227 2 1/16 2 3/8 1/8 2.109 .018 .139 .004 .1072 53,57 0,46 3,53 0,10
2-228 -228 2 1/4 2 1/2 1/8 2.234 .020 .139 .004 .1131 56,74 0,51 3,53 0,10
2-229 -229 2 3/8 2 5/8 1/8 2.359 .020 .139 .004 .1191 59,92 0,51 3,53 0,10
2-230 -230 2 1/2 2 3/4 1/8 2.484 .020 .139 .004 .1250 63,09 0,51 3,53 0,10
2-231 -231 2 5/8 2 7/8 1/8 2.609 .020 .139 .004 .1310 66,27 0,51 3,53 0,10
2-232 -232 2 3/4 3 1/8 2.734 .024 .139 .004 .1370 69,44 0,61 3,53 0,10
2-233 -233 2 7/8 3 1/8 1/8 2.859 .024 .139 .004 .1429 72,62 0,61 3,53 0,10
2-234 -234 3 3 1/4 1/8 2.984 .024 .139 .004 .1489 75,79 0,61 3,53 0,10
2-235 -235 3 1/8 3 3/8 1/8 3.109 .024 .139 .004 .1548 78,97 0,61 3,53 0,10
2-236 -236 3 1/4 3 1/2 1/8 3.234 .024 .139 .004 .1608 82,14 0,61 3,53 0,10
2-237 -237 3 3/8 3 5/8 1/8 3.359 .024 .139 .004 .1668 85,32 0,61 3,53 0,10
2-238 -238 3 1/2 3 3/4 1/8 3.484 .024 .139 .004 .1727 88,49 0,61 3,53 0,10
2-239 -239 3 5/8 3 7/8 1/8 3.609 .028 .139 .004 .1787 91,67 0,71 3,53 0,10
2-240 -240 3 3/4 4 1/8 3.734 .028 .139 .004 .1846 94,84 0,71 3,53 0,10
2-241 -241 3 7/8 4 1/8 1/8 3.859 .028 .139 .004 .1906 98,02 0,71 3,53 0,10
2-242 -242 4 4 1/4 1/8 3.984 .028 .139 .004 .1966 101,19 0,71 3,53 0,10
2-243 -243 1 1/8 1 3/8 1/8 4.109 .028 .139 .004 .2025 104,37 0,71 3,53 0,10
2-244 -244 4 1/4 4 1/2 1/8 4.234 .030 .139 .004 .2085 107,54 0,76 3,53 0,10
2-245 -245 4 3/8 4 5/8 1/8 4.359 .030 .139 .004 .2144 110,72 0,76 3,53 0,10
2-246 -246 4 1/2 4 3/4 1/8 4.484 .030 .139 .004 .2204 113,89 0,76 3,53 0,10
2-247 -247 4 5/8 4 7/8 1/8 4.609 .030 .139 .004 .2264 117,07 0,76 3,53 0,10
2-248 -248 4 3/4 5 1/8 4.734 .030 .139 .004 .2323 120,24 0,76 3,53 0,10
2-249 -249 4 7/8 5 1/8 1/8 4.859 .035 .139 .004 .2383 123,42 0,89 3,53 0,10
2-250 -250 5 5 1/4 1/8 4.984 .035 .139 .004 .2442 126,59 0,89 3,53 0,10
2-251 -251 5 1/8 5 3/8 1/8 5.109 .035 .139 .004 .2502 129,77 0,89 3,53 0,10
2-252 -252 5 1/4 5 1/2 1/8 5.234 .035 .139 .004 .2561 132,94 0,89 3,53 0,10
2-253 -253 5 3/8 5 5/8 1/8 5.359 .035 .139 .004 .2621 136,12 0,89 3,53 0,10
2-254 -254 5 1/2 5 3/4 1/8 5.484 .035 .139 .004 .2681 139,29 0,89 3,53 0,10
2-255 -255 5 5/8 5 7/8 1/8 5.609 .035 .139 .004 .2740 142,47 0,89 3,53 0,10
2-256 -256 5 3/4 6 1/8 5.734 .035 .139 .004 .2800 145,64 0,89 3,53 0,10
2-257 -257 5 7/8 6 1/8 1/8 5.859 .035 .139 .004 .2859 148,82 0,89 3,53 0,10
2-258 -258 6 6 1/4 1/8 5.984 .035 .139 .004 .2919 151,99 0,89 3,53 0,10
2-259 -259 6 1/4 6 1/2 1/8 6.234 .040 .139 .004 .3038 158,34 1,02 3,53 0,10
2-260 -260 6 1/2 6 3/4 1/8 6.484 .040 .139 .004 .3157 164,69 1,02 3,53 0,10
2-261 -261 6 3/4 7 1/8 6.734 .040 .139 .004 .3277 171,04 1,02 3,53 0,10
2-262 -262 7 7 1/4 1/8 6.984 .040 .139 .004 .3396 177,39 1,02 3,53 0,10
2-263 -263 7 1/4 7 1/2 1/8 7.234 .045 .139 .004 .3515 183,74 1,14 3,53 0,10
2-264 -264 7 1/2 7 3/4 1/8 7.484 .045 .139 .004 .3634 190,09 1,14 3,53 0,10
2-265 -265 7 3/4 8 1/8 7.734 .045 .139 .004 .3753 196,44 1,14 3,53 0,10
2-266 -266 8 8 1/4 1/8 7.984 .045 .139 .004 .3872 202,79 1,14 3,53 0,10
2-267 -267 8 1/4 8 1/2 1/8 8.234 .050 .139 .004 .3992 209,14 1,27 3,53 0,10
2-268 -268 8 1/2 8 3/4 1/8 8.484 .050 .139 .004 .4111 215,49 1,27 3,53 0,10
2-269 -269 8 3/4 9 1/8 8.734 .050 .139 .004 .4230 221,84 1,27 3,53 0,10
2-270 -270 9 9 1/4 1/8 8.984 .050 .139 .004 .4349 228,19 1,27 3,53 0,10
2-271 -271 9 1/4 9 1/2 1/8 9.234 .055 .139 .004 .4468 234,54 1,4 3,53 0,10
2-272 -272 9 1/2 9 3/4 1/8 9.484 .055 .139 .004 .4588 240,89 1,4 3,53 0,10
2-273 -273 9 3/4 10 1/8 9.734 .055 .139 .004 .4707 247,24 1,4 3,53 0,10
2-274 -274 10 10 1/4 1/8 9.984 .055 .139 .004 .4826 253,59 1,4 3,53 0,10
2-275 -275 10 1/2 10 3/4 1/8 10.484 .055 .139 .004 .5064 266,29 1,4 3,53 0,10
2-276 -276 11 11 1/4 1/8 10.984 .065 .139 .004 .5303 278,99 1,65 3,53 0,10
2-277 -277 11 1/2 11 3/4 1/8 11.484 .065 .139 .004 .5541 291,69 1,65 3,53 0,10
2-278 -278 12 12 1/4 1/8 11.984 .065 .139 .004 .5779 304,39 1,65 3,53 0,10
2-279 -279 13 13 1/4 1/8 12.984 .065 .139 .004 .6256 329,79 1,65 3,53 0,10
2-280 -280 14 14 1/4 1/8 13.984 .065 .139 .004 .6733 355,19 1,65 3,53 0,10
2-281 -281 15 15 1/4 1/8 14.984 .065 .139 .004 .7210 380,59 1,65 3,53 0,10
2-282 -282 16 16 1/4 1/8 15.955 .075 .139 .004 .7672 405,26 1,91 3,53 0,10
2-283 -283 17 17 1/4 1/8 16.955 .080 .139 .004 .8149 430,66 2,03 3,53 0,10
2-284 -284 18 18 1/4 1/8 17.955 .085 .139 .004 .8626 456,06 2,16 3,53 0,10

Parker Series 2-3XX O-Ring Sizes
Parker Size AS 568A Size ID (nominal in.) OD (nominal in.) W (nominal in.) ID (actual in.) ± W (actual in.) ± Basic Volume (Cu. in.) ID (actual mm.) ± W (actual mm.) ±
2-309 -309 7/16 13/16 3/16 .412 .005 .210 .005 .0677 10,46 0,13 5,33 0,13
2-310 -310 1/2 7/8 3/16 .475 .005 .210 .005 .0745 12,07 0,13 5,33 0,13
2-311 -311 9/16 15/16 3/16 .537 .007 .210 .005 .0813 13,64 0,18 5,33 0,13
2-312 -312 5/8 1 3/16 .600 .009 .210 .005 .0881 15,24 0,23 5,33 0,13
2-313 -313 11/16 1 1/16 3/16 .662 .009 .210 .005 .0949 16,81 0,23 5,33 0,13
2-314 -314 3/4 1 1/8 3/16 .725 .010 .210 .005 .1017 18,42 0,25 5,33 0,13
2-315 -315 13/16 1 3/16 3/16 .787 .010 .210 .005 .1085 19,99 0,25 5,33 0,13
2-316 -316 7/8 1 1/4 3/16 .850 .010 .210 .005 .1153 21,59 0,25 5,33 0,13
2-317 -317 15/16 1 5/16 3/16 .912 .010 .210 .005 .1221 23,16 0,25 5,33 0,13
2-318 -318 1 1 3/8 3/16 .975 .010 .210 .005 .1289 24,77 0,25 5,33 0,13
2-319 -319 1 1/16 1 7/16 3/16 1.037 .010 .210 .005 .1357 26,34 0,25 5,33 0,13
2-320 -320 1 1/8 1 1/2 3/16 1.100 .012 .210 .005 .1425 27,94 0,3 5,33 0,13
2-321 -321 1 3/16 1 9/16 3/16 1.162 .012 .210 .005 .1493 29,51 0,3 5,33 0,13
2-322 -322 1 1/4 1 5/8 3/16 1.225 .012 .210 .005 .1561 31,12 0,3 5,33 0,13
2-323 -323 1 5/16 1 11/16 3/16 1.287 .012 .210 .005 .1629 32,69 0,3 5,33 0,13
2-324 -324 1 3/8 1 3/4 3/16 1.350 .012 .210 .005 .1697 34,29 0,3 5,33 0,13
2-325 -325 1 1/2 1 7/8 3/16 1.475 .015 .210 .005 .1833 37,47 0,38 5,33 0,13
2-326 -326 1 5/8 2 3/16 1.600 .015 .210 .005 .1970 40,64 0,38 5,33 0,13
2-327 -327 1 3/4 2 1/8 3/16 1.725 .015 .210 .005 .2106 43,82 0,38 5,33 0,13
2-328 -328 1 7/8 2 1/4 3/16 1.850 .015 .210 .005 .2242 46,99 0,38 5,33 0,13
2-329 -329 2 2 3/8 3/16 1.975 .018 .210 .005 .2378 50,17 0,46 5,33 0,13
2-330 -330 2 1/8 2 1/2 3/16 2.100 .018 .210 .005 .2514 53,34 0,46 5,33 0,13
2-331 -331 2 1/4 2 5/8 3/16 2.225 .018 .210 .005 .2650 56,52 0,46 5,33 0,13
2-332 -332 2 3/8 2 3/4 3/16 2.350 .018 .210 .005 .2786 59,69 0,46 5,33 0,13
2-333 -333 2 1/2 2 7/8 3/16 2.475 .210 .210 .005 .2922 62,87 5,33 5,33 0,13
2-334 -334 2 5/8 3 3/16 2.600 .210 .210 .005 .3058 66,04 5,33 5,33 0,13
2-335 -335 2 3/4 3 1/8 3/16 2.725 .210 .210 .005 .3194 69,22 5,33 5,33 0,13
2-336 -336 2 7/8 3 1/4 3/16 2.850 .210 .210 .005 .3330 72,39 5,33 5,33 0,13
2-337 -337 3 3 3/8 3/16 2.975 .210 .210 .005 .3466 75,57 5,33 5,33 0,13
2-338 -338 3 1/8 3 1/2 3/16 3.100 .024 .210 .005 .3602 78,74 0,61 5,33 0,13
2-339 -339 3 1/4 3 5/8 3/16 3.225 .024 .210 .005 .3738 81,92 0,61 5,33 0,13
2-340 -340 3 3/8 3 3/4 3/16 3.35 .024 .210 .005 .3874 85,09 0,61 5,33 0,13
2-341 -341 3 1/2 3 7/8 3/16 3.475 .024 .210 .005 .4010 88,27 0,61 5,33 0,13
2-342 -342 3 5/8 4 3/16 3.600 .028 .210 .005 .4146 91,44 0,71 5,33 0,13
2-343 -343 3 3/4 4 1/8 3/16 3.725 .028 .210 .005 .4282 94,62 0,71 5,33 0,13
2-344 -344 3 7/8 4 1/4 3/16 3.850 .028 .210 .005 .4418 97,79 0,71 5,33 0,13
2-345 -345 4 4 3/8 3/16 3.975 .028 .210 .005 .4554 100,97 0,71 5,33 0,13
2-346 -346 4 1/8 4 1/2 3/16 4.100 .028 .210 .005 .4690 104,14 0,71 5,33 0,13
2-347 -347 4 1/4 4 5/8 3/16 4.225 .030 .210 .005 .4826 107,32 0,76 5,33 0,13
2-348 -348 4 3/8 4 3/4 3/16 4.350 .030 .210 .005 .4962 110,49 0,76 5,33 0,13
2-349 -349 4 1/2 4 7/8 3/16 4.475 .030 .210 .005 .5098 113,67 0,76 5,33 0,13
2-350 -350 4 5/8 5 3/16 4.600 .030 .210 .005 .5234 116,84 0,76 5,33 0,13
2-351 -351 4 3/4 5 1/8 3/16 4.725 .030 .210 .005 .5370 120,02 0,76 5,33 0,13
2-352 -352 4 7/8 5 1/4 3/16 4.850 .030 .210 .005 .5506 123,19 0,76 5,33 0,13
2-353 -353 5 5 3/8 3/16 4.975 .037 .210 .005 .5642 126,37 0,94 5,33 0,13
2-354 -354 5 1/8 5 1/2 3/16 5.100 .037 .210 .005 .5778 129,54 0,94 5,33 0,13
2-355 -355 5 1/4 5 5/8 3/16 5.225 .037 .210 .005 .5914 132,72 0,94 5,33 0,13
2-356 -356 5 3/8 5 3/4 3/16 5.350 .037 .210 .005 .6050 135,89 0,94 5,33 0,13
2-357 -357 5 1/2 5 7/8 3/16 5.475 .037 .210 .005 .6186 139,07 0,94 5,33 0,13
2-358 -358 5 5/8 6 3/16 5.600 .037 .210 .005 .6322 142,24 0,94 5,33 0,13
2-359 -359 5 3/4 6 1/8 3/16 5.725 .037 .210 .005 .6458 145,42 0,94 5,33 0,13
2-360 -360 5 7/8 6 1/4 3/16 5.850 .037 .210 .005 .6594 148,59 0,94 5,33 0,13
2-361 -361 6 6 3/8 3/16 5.975 .037 .210 .005 .6730 151,77 0,94 5,33 0,13
2-362 -362 6 1/4 6 5/8 3/16 6.225 .040 .210 .005 .7002 158,12 1,02 5,33 0,13
2-363 -363 6 1/2 6 7/8 3/16 6.475 .040 .210 .005 .7274 164,47 1,02 5,33 0,13
2-364 -364 6 3/4 7 1/8 3/16 6.725 .040 .210 .005 .7546 170,82 1,02 5,33 0,13
2-365 -365 7 7 3/8 3/16 6.975 .040 .210 .005 .7818 177,17 1,02 5,33 0,13
2-366 -366 7 1/4 7 5/8 3/16 7.225 .045 .210 .005 .8090 183,52 1,14 5,33 0,13
2-367 -367 7 1/2 7 7/8 3/16 7.475 .045 .210 .005 .8362 189,87 1,14 5,33 0,13
2-368 -368 7 3/4 8 1/8 3/16 7.725 .045 .210 .005 .8634 196,22 1,14 5,33 0,13
2-369 -369 8 8 3/8 3/16 7.975 .045 .210 .005 .8906 202,57 1,14 5,33 0,13
2-370 -370 8 1/4 8 5/8 3/16 8.225 .050 .210 .005 .9178 208,92 1,27 5,33 0,13
2-371 -371 8 1/2 8 7/8 3/16 8.475 .050 .210 .005 .9450 215,27 1,27 5,33 0,13
2-372 -372 8 3/4 9 1/8 3/16 8.725 .050 .210 .005 .9722 221,62 1,27 5,33 0,13
2-373 -373 9 9 3/8 3/16 8.975 .050 .210 .005 .9994 227,97 1,27 5,33 0,13
2-374 -374 9 1/4 9 5/8 3/16 9.225 .055 .210 .005 1.0266 234,32 1,4 5,33 0,13
2-375 -375 9 1/2 9 7/8 3/16 9.475 .055 .210 .005 1.0538 240,67 1,4 5,33 0,13
2-376 -376 9 3/4 10 1/8 3/16 9.725 .055 .210 .005 1.0810 247,02 1,4 5,33 0,13
2-377 -377 10 10 3/8 3/16 9.975 .055 .210 .005 1.1083 253,37 1,4 5,33 0,13
2-378 -378 10 1/2 10 7/8 3/16 10.475 .060 .210 .005 1.1627 266,07 1,52 5,33 0,13
2-379 -379 11 11 3/8 3/16 10.975 .060 .210 .005 1.2171 278,77 1,52 5,33 0,13
2-380 -380 11 1/2 11 7/8 3/16 11.475 .065 .210 .005 1.2715 291,47 1,65 5,33 0,13
2-381 -381 12 12 3/8 3/16 11.975 .065 .210 .005 1.3259 304,17 1,65 5,33 0,13
2-382 -382 13 13 3/8 3/16 12.975 .065 .210 .005 1.4347 329,57 1,65 5,33 0,13
2-383 -383 14 14 3/8 3/16 13.975 .070 .210 .005 1.5435 354,97 1,78 5,33 0,13
2-384 -384 15 15 3/8 3/16 14.975 .070 .210 .005 1.6523 380,37 1,78 5,33 0,13
2-385 -385 16 16 3/8 3/16 15.955 .075 .210 .005 1.7590 405,26 1,91 5,33 0,13
2-386 -386 17 17 3/8 3/16 16.955 .080 .210 .005 1.8678 430,66 2,03 5,33 0,13
2-387 -387 18 18 3/8 3/16 17.955 .085 .210 .005 1.9766 456,06 2,16 5,33 0,13
2-388 -388 19 19 3/8 3/16 18.955 .090 .210 .005 2.0854 481,46 2,29 5,33 0,13
2-389 -389 20 20 3/8 3/16 19.955 .095 .210 .005 2.1942 506,86 2,41 5,33 0,13
2-390 -390 21 21 3/8 3/16 20.955 .095 .210 .005 2.3030 532,26 2,41 5,33 0,13
2-391 -391 22 22 3/8 3/16 21.955 .100 .210 .005 2.4118 557,66 2,54 5,33 0,13
2-392 -392 23 23 3/8 3/16 22.940 .105 .210 .005 2.5190 582,68 2,67 5,33 0,13
2-393 -393 24 24 3/8 3/16 23.940 .110 .210 .005 2.6278 608,08 2,79 5,33 0,13
2-394 -394 25 25 3/8 3/16 24.940 .115 .210 .005 2.7366 633,48 2,92 5,33 0,13
2-395 -395 26 26 3/8 3/16 25.940 .120 .210 .005 2.8454 658,88 3,05 5,33 0,13

Parker Series 2-4XX O-Ring Sizes
Parker Size AS 568A Size ID (nominal in.) OD (nominal in.) W (nominal in.) ID (actual in.) ± W (actual in.) ± Basic Volume (Cu. in.) ID (actual mm.) ± W (actual mm.) ±
2-425 -425 4 1/2 5 1/4 4.475 .033 .275 .006 .8863 113,67 0,84 6,99 0,15
2-426 -426 4 5/8 5 1/8 1/4 4.600 .033 .275 .006 .9097 116,84 0,84 6,99 0,15
2-427 -427 4 3/4 5 1/4 1/4 4.725 .033 .275 .006 .9330 120,02 0,84 6,99 0,15
2-428 -428 4 7/8 5 3/8 1/4 4.85 .033 .275 .006 .9563 123,19 0,84 6,99 0,15
2-429 -429 5 5 1/8 1/4 4.975 .037 .275 .006 .9796 126,37 0,94 6,99 0,15
2-430 -430 5 1/8 5 5/8 1/4 5.100 .037 .275 .006 1.0030 129,54 0,94 6,99 0,15
2-431 -431 5 1/4 5 3/4 1/4 5.225 .037 .275 .006 1.0263 132,72 0,94 6,99 0,15
2-432 -432 5 3/8 5 7/8 1/4 5.350 .037 .275 .006 1.0496 135,89 0,94 6,99 0,15
2-433 -433 5 1/2 6 1/4 5.475 .037 .275 .006 1.0729 139,07 0,94 6,99 0,15
2-434 -434 5 5/8 6 1/8 1/4 5.600 .037 .275 .006 1.0963 142,24 0,94 6,99 0,15
2-435 -435 5 3/4 6 1/4 1/4 5.725 .037 .275 .006 1.1196 145,42 0,94 6,99 0,15
2-436 -436 5 7/8 6 3/8 1/4 5.850 .037 .275 .006 1.1429 148,59 0,94 6,99 0,15
2-437 -437 6 6 1/2 1/4 5.975 .037 .275 .006 1.1662 151,77 0,94 6,99 0,15
2-438 -438 6 1/4 6 3/4 1/4 6.225 .040 .275 .006 1.2129 158,12 1,02 6,99 0,15
2-439 -439 6 1/2 7 1/4 6.475 .040 .275 .006 1.2595 164,47 1,02 6,99 0,15
2-440 -440 6 3/4 7 1/4 1/4 6.725 .040 .275 .006 1.3062 170,82 1,02 6,99 0,15
2-441 -441 7 7 1/2 1/4 6.975 .040 .275 .006 1.3528 177,17 1,02 6,99 0,15
2-442 -442 7 1/4 7 3/4 1/4 7.225 .045 .275 .006 1.3995 183,52 1,14 6,99 0,15
2-443 -443 7 1/2 8 1/4 7.475 .045 .275 .006 1.4461 189,87 1,14 6,99 0,15
2-444 -444 7 3/4 8 1/4 1/4 7.725 .045 .275 .006 1.4928 196,22 1,14 6,99 0,15
2-445 -445 8 8 1/2 1/4 7.975 .045 .275 .006 1.5394 202,57 1,14 6,99 0,15
2-446 -446 8 1/2 9 1/4 8.475 .055 .275 .006 1.6327 215,27 1,4 6,99 0,15
2-447 -447 9 9 1/2 1/4 8.975 .055 .275 .006 1.7260 227,97 1,4 6,99 0,15
2-448 -448 9 1/2 10 1/4 9.475 .055 .275 .006 1.8193 240,67 1,4 6,99 0,15
2-449 -449 10 10 1/2 1/4 9.975 .055 .275 .006 1.9126 253,37 1,4 6,99 0,15
2-450 -450 10 1/2 11 1/4 10.475 .060 .275 .006 2.0059 266,07 1,52 6,99 0,15
2-451 -451 11 11 1/2 1/4 10.975 .060 .275 .006 2.0992 278,77 1,52 6,99 0,15
2-452 -452 11 1/2 12 1/4 11.475 .060 .275 .006 2.1925 291,47 1,52 6,99 0,15
2-453 -453 12 12 1/2 1/4 11.975 .060 .275 .006 2.2858 304,17 1,52 6,99 0,15
2-454 -454 12 1/2 13 1/4 12.475 .060 .275 .006 2.3791 316,87 1,52 6,99 0,15
2-455 -455 13 13 1/2 1/4 12.975 .060 .275 .006 2.4724 329,57 1,52 6,99 0,15
2-456 -456 13 1/2 14 1/4 13.475 .070 .275 .006 2.5657 342,27 1,78 6,99 0,15
2-457 -457 14 14 1/2 1/4 13.975 .070 .275 .006 2.6590 354,97 1,78 6,99 0,15
2-458 -458 14 1/2 15 1/4 14.475 .070 .275 .006 2.7523 367,67 1,78 6,99 0,15
2-459 -459 15 15 1/2 1/4 14.975 .070 .275 .006 2.8456 380,37 1,78 6,99 0,15
2-460 -460 15 1/2 16 1/4 15.475 .070 .275 .006 2.9389 393,07 1,78 6,99 0,15
2-461 -461 16 16 1/2 1/4 15.955 .075 .275 .006 3.0285 405,26 1,91 6,99 0,15
2-462 -462 16 1/2 17 1/4 16.455 .075 .275 .006 3.1218 417,96 1,91 6,99 0,15
2-463 -463 17 17 1/2 1/4 16.955 .080 .275 .006 3.2151 430,66 2,03 6,99 0,15
2-464 -464 17 1/2 18 1/4 17.455 .085 .275 .006 3.3084 443,36 2,16 6,99 0,15
2-465 -465 18 18 1/2 1/4 17.955 .085 .275 .006 3.4017 456,06 2,16 6,99 0,15
2-466 -466 18 1/2 19 1/4 18.455 .085 .275 .006 3.4950 468,76 2,16 6,99 0,15
2-467 -467 19 19 1/2 1/4 18.955 .090 .275 .006 3.5883 481,46 2,29 6,99 0,15
2-468 -468 19 1/2 20 1/4 19.455 .090 .275 .006 3.6816 494,16 2,29 6,99 0,15
2-469 -469 20 20 1/2 1/4 19.955 .095 .275 .006 3.7749 506,86 2,41 6,99 0,15
2-470 -470 21 21 1/2 1/4 20.955 .095 .275 .006 3.9615 532,26 2,41 6,99 0,15
2-471 -471 22 22 1/2 1/4 21.955 .100 .275 .006 4.1481 557,66 2,54 6,99 0,15
2-472 -472 23 23 1/2 1/4 22.940 .105 .275 .006 4.3319 582,68 2,67 6,99 0,15
2-473 -473 24 24 1/2 1/4 23.940 .110 .275 .006 4.5185 608,08 2,79 6,99 0,15
2-474 -474 25 26 1/2 1/4 24.940 .115 .275 .006 4.7051 633,48 2,92 6,99 0,15
2-475 -475 26 25 1/2 1/4 25.940 .120 .275 .006 4.8917 658,88 3,05 6,99 0,15