Parker Silicone (VMQ) O-Rings

Parker Silicone (VMQ) O-Ring Material Description:

Silicones have good ozone and weather resistance as well as good insulating and physiologically neutral properties. However, silicone elastomers as a group, have relatively low tensile strength, poor tear strength and little wear resistance.

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

General VMQ Information Freudenberg VMQ Compounds

Parker Logo

Parker (VMQ) Chemical Resistance:

Animal and vegetable oil and grease.
High molecular weight chlorinated aromatic hydrocarbons (including flame-resistant insulators, and coolant for transformers).
Moderate water resistance.
Diluted salt solutions.
Ozone, aging and weather

Parker (VMQ) Not Compatible With:

Superheated water steam over 121°C (250°F).
Acids and alkalis.
Low molecular weight chlorinated hydrocarbons (trichloroethylene).
Hydrocarbon based fuels.
Aromatic hydrocarbons (benzene, toluene).
Low molecular weight silicone oils.

Parker Silicone (VMQ) O-Ring Compound Numbering System:

Parker has two types of nomenclature used to reference Silicone (VMQ) products.

S
Polymer Code (Single Letter)

1120
Sequence Number (Four Digits)

-70
Durometer Indicator (Two Digits)

- OR -

S
Polymer Code (Single Letter)

A
Special Property Description (Single Letter)

150
Sequence Number (Three Letters)

-50
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

Carboxylated

Parker Silicone (VMQ) O-Ring Compounds:

Parker Compound Number	Hardness (Shore A)	Low Temp	High Temp	Color	Recommended For
S0469-40	40 +- 5	-75	400	Rust	AMS 3301, USP Class VI, A-A-59588 CL2a, 2b, GR 40
S0802-40	40 +- 5	-60	400	White	FDA
S0595-50	50 +- 5	-70	400	Rust	AMS 3302
S0899-50	50 +- 5	-103	400	Rust	ZZ-R-765 CL 1a, 1b, 2a, 2b GR 50
SA150-50	50 +- 5	-65	400	Trans	Low Organic Extractibles
S0317-60	60 +- 5	-103	450	Rust	FDA, USDA, USP CL VI
S0613-60	60 +- 5	-60	450	Rust	ZZ-R-765 Cl 2b, Gr 60, AMS 3303
S0383-70	70 +- 5	-175	400	Rust	A-A-59588 CL 1a, 1b, GR 70, AMS 3337
S0455-70	70 +- 5	-65	450/500	Rust	High Temperature
S0604-70	70 +- 5	-65	450	Rust	ZZ-R-765 Cl 2a, 2b, Gr 70, AMS 3304, AMS 3357, MIL-G-21569 Class 2
S1138-70	70 +- 5	-60	400	Rust	FDA, USP Class VI, USP <87>
S1224-70	70 +- 5	-65	450	Rust	A-A-59588 Cl 2a, 2b, Gr 70, AMS 3357, MIL-G-21569 Class 2, AMS 3304
SM355-75	75 +- 5	-60	450	Rust	AMS 7267, FDA, USP Class VI, USP <87>
S0614-80	80 +- 5	-65	450	Rust	A-A-59588 CL 2a, 2b, GR 80, AMS 3305

ASTM Designation
VMQ

Shelf Life
25 Years

Hardness (Shore A) Range
40 - 80

Try Out O-Ring Shelf Life Calculator

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.

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