Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.079 in
(2.00 mm)
3.031 in
(77.00 mm)
FKM VT70BK21 X-Ring, Size: 2X77
Material: FKM VT70BK21 X-Ring
Size: Metric 2X77 X-Ring
Part Number: VT70BK21-XR-2X77
Color: Black
Detailed Description
VT70BK21-XR-2X77 is a Black, 70 Shore A, FKM (Viton®) X-Ring, a FKM Type GF (Viton®) product. It is a 70 durometer FKM (Viton®). VT70BK21 is manufactured with the following features & specifications: FDA Compliant. VT70BK21-XR-2X77 is Metric size 2X77 X-Ring also referred to as 2mm (Cross Sectional Diameter (CS)) x 77mm (Inside Diameter (ID)). Material: 70 Durometer FKM VT70BK21 X-Ring Size: Metric 2X77, 2mm CS X 77mm ID (0.079" CS X 3.031" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | VT70BK21 |
| Material | FKM (Viton®) |
| Subtype | FKM Type GF (Viton®) |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| High Temperature | 225 °C / 437 °F |
| Low Temperature | -16 °C / 3 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | X-Ring |
| Size Standard | Metric |
| Size | 2X77 |
| Cross Section (CS) | 2.00 mm / 0.079 in |
| Inside Diameter (ID) | 77.00 mm / 3.031 in |
| Other Specifications | |
FDA Compliant | |
VT70BK21 is a 70 shore A black FKM Type GF compound engineered for FDA compliant sealing applications that require enhanced chemical resistance. This material is ideal for O-rings and gaskets used in food processing, pharmaceutical equipment, and sanitary systems, offering improved resistance to steam, acids, and aromatic hydrocarbons compared to standard FKM grades. It provides excellent heat resistance, high temperature stability, and durability against ozone, weathering, and aging for long service life. With a service temperature range of -16°C to 225°C, VT70BK21 meets ASTM D2000 M2HK710 requirements and delivers reliable performance in regulated and chemically demanding environments.
FKM, commonly referred to as Viton®, is a high performance fluoroelastomer widely used in O-rings and gaskets where resistance to heat, fuels, and aggressive chemicals is essential. GF-type FKM compounds are specifically formulated to improve resistance to steam, acids, and harsh chemical environments while maintaining strong thermal stability. FDA compliant variants are commonly used in food, beverage, and pharmaceutical industries where both performance and regulatory compliance are required. 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.
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