FKM VT70BK20 O-Ring, Size: 1.78X7.66
Material: FKM VT70BK20 O-Ring
Size: Metric 1.78X7.66 O-Ring
Part Number: VT70BK20-OR-1.78X7.66
VT70BK20
FKM (Viton®)
70
Shore A
FKM Type GF (Viton®)
Color: Black
Detailed Description
VT70BK20-OR-1.78X7.66 is a Black, 70 Shore A, FKM (Viton®) O-Ring, a FKM Type GF (Viton®) product. VT70BK20-OR-1.78X7.66 is Metric size 1.78X7.66 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 7.66mm (Inside Diameter (ID)).
Material: FKM VT70BK20 O-Ring
Size: Metric 1.78X7.66, 1.78mm CS X 7.66mm ID (0.070" CS X 0.302" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | VT70BK20 |
| Material | FKM (Viton®) |
| Subtype | FKM Type GF (Viton®) |
| Color | Black |
| Durometer | 70 Shore A |
| High Temperature | 225 °C / 437 °F |
| Low Temperature | -16 °C / 3 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 1.78X7.66 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 7.66 mm / 0.302 in |
VT70BK20 is a 70 shore A black FKM Type GF compound engineered for applications requiring enhanced chemical resistance beyond standard fluorocarbon materials. This material is well suited for O-rings and gaskets exposed to steam, acids, aromatic hydrocarbons, and aggressive industrial media, while maintaining excellent performance in fuels and oils. It offers strong heat resistance, high temperature stability, and durability against ozone, weathering, and aging, ensuring long service life in demanding environments. With a service temperature range of -16°C to 225°C, VT70BK20 meets ASTM D2000 M2HK814 requirements and can be compared to Parker V1274-80 when evaluating equivalent GF-type FKM materials.
FKM, commonly referred to as Viton®, is a high performance fluoroelastomer widely used in O-rings and gaskets where resistance to heat, fuels, and harsh chemicals is essential. GF-type FKM compounds are specifically formulated to improve resistance to steam, acids, and chemically aggressive environments compared to standard Type A or B grades. These materials are commonly used in chemical processing, oil and gas, and industrial applications where both chemical compatibility and thermal stability are critical. While highly versatile, FKM materials are generally not recommended for certain polar solvents or extreme steam conditions beyond their limits, making proper material selection important.
Keywords: VT70BK20, VT 70BK20, VT-70BK20, VT70 BK20, FKM GF, chemical resistant fluorocarbon, steam resistant elastomer, acid resistant O-rings, aromatic hydrocarbon resistant rubber, ASTM D2000 M2HK814, Parker V1274-80 equivalent, high temperature gasket material, industrial sealing elastomer, Datasheet, TDS, Test Report, MTR, MSDS, SDS, Parker V1274-80 O-rings, Parker V1274 FKM seals, Parker V1274-80 USP Class VI gasket material, Parker V1274 ISO 10993 fluorocarbon seals, Parker V1274 low swell Viton® compound, Parker V1274-80 FKM O-rings