Parker Fluorosilicone (FVMQ) O-Rings

Parker Fluorosilicone (FVMQ) O-Rings Material Description:

FVMQ contains trifluoropropyl groups next to the methyl groups. The mechanical and physical properties are very similar to VMQ. However, FVMQ offers improved fuel and mineral oil resistance but poor hot air resistance when compared with VMQ.

Parker O-Ring Distributor

For over 50 years, Engineered Seal Products has partnered with Parker Seals. ESP is proud to be one of the FEW Premier Distributors to qualify as a "Parker Seal Technology Center (STC)".

What does Parker STC mean?

  • Proven Engineering Capability
  • Expert Material & Technical Support
  • ISO Quality Approval
  • Strong Financial Track Record
Parker (FVMQ) Chemical Resistance::
  • Aromatic mineral oils (IRM 903 oil).
  • Fuels.
  • Low molecular weight aromatic hydrocarbons (benzene, toluene).
Parker (FVMQ) Not Compatible With::
  • Poor hot air resistance when compared with VMQ.

Parker Fluorosilicone (FVMQ) O-Rings Compound Numbering System:

Parker has two types of nomenclatures used to reference Fluorosilicone (FVMQ) products.

Polymer Code (Single Letter)
Sequence Number (Four Digits)
Durometer Indicator (Two Digits)

- OR -

Polymer Code (Single Letter)
Special Property Description (Single Letter)
Sequence Number (Three Letters)
Durometer Indicator (Two Digits)

Special Property Descriptions:

General Purpose
Low Compression Set
Ethylene Acrylate or (Vamac®)
Fuel Resistant or Fully Fluorinated
Higher Fluorine Content
NSF/FDA/WRAS Approvals
Internally Lubed
Mil/AMS Specifications
Low Temperature Flexible
Non-Black Compound

Parker Fluorosilicone (FVMQ) O-Rings Compounds:

Parker Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color Recommended For
LA163-70 70 +- 5 -100 350 Green AMS-R-25988, TY I, CL I, GR 70, UL listed
LM100-70 PDF 70 +- 5 -100 350 Blue AMS-R-25988, Ty 1, CL 1, GR 70
LM151-50 (11645) PDF 50 +- 5 -100 350 Blue General Purpose
LM158-60 PDF 60 +- 5 -100 350 Blue AMS-R-25988, TY 1, CL 1, GR 60, AMS 3325
LM159-70 PDF 70 +- 5 -100 350 Blue AMS-R-25988, TY 1, CL 1, GR 70
L1120-70 PDF 70 +- 5 -100 350 Blue AMS-R-25988, TY I, CL I, GR 70, UL listed
L1077-75 PDF 75 +- 5 -90 350 Blue AMS-R-25988, TY I, CL III, GR 75
LM160-80 PDF 80 +- 5 -90 350 Blue AMS-R-25988, TY 1, CL 1, GR 80
L1186-80 PDF 80 +- 5 -85 350 Rust PTFE Loaded
40713-75 75 +- 5 -90 350 Yellow Automotive Fuel Quick Disconnects

ASTM Designation
Shelf Life
25 Years
Hardness (Shore A) Range
40 - 95

Temperature ranges will apply to the majority of media for which the material is potentially recommended. With some media however, the service temperature range may be significantly different. ALWAYS TEST UNDER ACUTAL SERVICE CONDITIONS.

ESP’s shelf life recommendation is based on the ARP 5316 standard and intended to be utilized by those organizations who do not already have specific recommendations for the control of elastomeric seals. It should be noted that the packaging of the elastomeric seals prior to assembly into a product is an integral part of the controlled storage procedure. It provides a positive means of product identity from the time of manufacture, to the time of assembly.