Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
3.031 in
(77.00 mm)
FKM VT90BK32 X-Ring, Size: 4X77
Material: FKM VT90BK32 X-Ring
Size: Metric 4X77 X-Ring
Part Number: VT90BK32-XR-4X77
VT90BK32
FKM (Viton®)
90
Shore A
FKM Type GLT (Low Temp Viton®)
Color: Black
Detailed Description
VT90BK32-XR-4X77 is a Black, 90 Shore A, FKM (Viton®) X-Ring, a FKM Type GLT (Low Temp Viton®) product. It is a 90 durometer FKM (Viton®). VT90BK32 is manufactured with the following features & specifications: API 6A, Anti-Explosive Decompression, AED NACE TM0297, AED NORSOK M710. VT90BK32-XR-4X77 is Metric size 4X77 X-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 77mm (Inside Diameter (ID)). Material: 90 Durometer FKM VT90BK32 X-Ring Size: Metric 4X77, 4mm CS X 77mm ID (0.157" CS X 3.031" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | VT90BK32 |
| Material | FKM (Viton®) |
| Subtype | FKM Type GLT (Low Temp Viton®) |
| Color | Black |
| Durometer | 90 Shore A Hardness |
| High Temperature | 225 °C / 437 °F |
| Low Temperature | -40 °C / -40 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | X-Ring |
| Size Standard | Metric |
| Size | 4X77 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 77.00 mm / 3.031 in |
| Other Specifications | |
API 6A | |
Anti-Explosive Decompression | |
AED NACE TM0297 | |
AED NORSOK M710 | |
VT90BK32 is a 90 shore A black FKM Type GLT compound engineered for high pressure sealing applications requiring anti explosive decompression performance and improved low temperature flexibility. This material passes API 6A, NORSOK M-710, and NACE TM0297 testing, making it ideal for O-rings and gaskets used in oil and gas equipment such as valves, wellheads, downhole tools, and pressure control systems. Its high durometer improves extrusion resistance while maintaining excellent chemical compatibility with fuels, oils, and aggressive process media, delivering reliable sealing across a service temperature range of -40°C to 225°C. VT90BK32 meets ASTM D2000 M3HK914 requirements and can be compared to Parker® VG109-90 when evaluating equivalent AED-resistant GLT 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, oils, and harsh chemicals is essential. GLT-type FKM compounds are specifically formulated to improve low temperature flexibility, while AED-resistant formulations are engineered to withstand rapid gas decompression without cracking or loss of sealing integrity. These materials are commonly used in oil and gas, aerospace, and industrial processing applications where high pressure, thermal cycling, and aggressive chemical exposure are expected. While highly versatile, FKM materials are generally not recommended for hot water, steam, or certain polar solvents beyond their operating limits, making proper material selection essential for long-term sealing reliability.
Keywords: VT90BK32, VT 90BK32, VT-90BK32, VT90 BK32, FKM GLT AED, API 6A FKM, NORSOK M-710 elastomer, NACE TM0297 rubber, Parker VG109-90 equivalent, explosive decompression resistant O-rings, RGD resistant FKM, high pressure gasket material, low temperature fluorocarbon, oil and gas sealing elastomer, ASTM D2000 M3HK914, Datasheet, TDS, Test Report, MTR, MSDS, SDS
