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VA203-75-OR-008
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CS

0.070 in

(1.78 mm)

ID

0.176 in

(4.47 mm)

ORing cut reference

See Data Sheet


FKM Parker VA203-75 O-Ring, Size: -008

Material: FKM Parker VA203-75 O-Ring

Size: AS568 -008 O-Ring

Part Number: VA203-75-OR-008

Parker Seal® (Parker)

VA203-75

FKM (Viton®)

75

Shore A

FKM Type A (General Purpose Viton®)

Extrusion Resistant

General Purpose Material

Color: Black

Detailed Description

VA203-75-OR-008 is a Black, 75 Shore A, FKM (Viton®) O-Ring made from Parker Seal® (Parker), a FKM Type A (General Purpose Viton®) product. Parker Seal® (Parker) VA203-75 is manufactured with the following features & specifications: Extrusion Resistant, General Purpose Material. VA203-75-OR-008 is AS568 size -008 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 4.47mm (Inside Diameter (ID)).


Material: FKM Parker VA203-75 O-Ring


Size: AS568 -008, 1.78mm CS X 4.47mm ID (0.070" CS X 0.176" ID)

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Technical SpecificationValue
Compound NumberVA203-75
BrandParker Seal® (Parker)
MaterialFKM (Viton®)
SubtypeFKM Type A (General Purpose Viton®)
ColorBlack
Durometer75 Shore A
High Temperature204 °C / 399 °F
Low Temperature-26 °C / -15 °F
Geometry Specifications
Cross Sectional GeometryO-Ring
Size StandardAS568
Size-008
Cross Section (CS)1.78 mm / 0.070 in
Inside Diameter (ID)4.47 mm / 0.176 in
Other Specifications

Extrusion Resistant

ORing cut reference
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Parker VA203-75 is a 75 shore A black FKM compound specifically designed for extrusion resistance in high pressure sealing environments such as diesel fuel injectors. This material offers excellent compatibility with petroleum, mineral, and vegetable oils, along with resistance to aromatic and chlorinated hydrocarbons, making it well suited for fuel system O-rings and gaskets. Its enhanced extrusion resistance helps maintain seal integrity under high pressure and tight clearances, while also providing strong resistance to ozone, weathering, and aging. With a typical service temperature range of approximately -150°F to 400°F, VA203-75 can be compared to other high performance FKM compounds used in fuel injection and high pressure sealing applications.

 

FKM, commonly referred to as Viton®, is a high performance fluoroelastomer widely used in O-rings and gaskets where resistance to fuels, oils, and elevated temperatures is critical. Specialized FKM formulations like extrusion resistant grades are engineered to perform in high pressure environments where standard elastomers may deform or fail. These materials are commonly used in automotive fuel systems, oil and gas equipment, and industrial machinery where durability and chemical resistance are essential. While highly effective in hydrocarbon environments, FKM compounds are generally not recommended for hot water, steam, or certain polar solvents, making proper material selection important for long-term sealing performance.

 

Keywords: Parker VA203-75, VA203-75, VA203 75, VA203 75 FKM, extrusion resistant FKM, diesel injector O-rings, fuel system gasket material, Viton extrusion resistant grade, high pressure sealing elastomer, oil resistant rubber, chemical resistant FKM seals, Parker fuel injector compound, Datasheet, TDS, Test Report, MTR, MSDS, SDS