Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.197 in
(5.00 mm)
2.598 in
(66.00 mm)
FKM VT50BK00 O-Ring, Size: 5X66
Material: FKM VT50BK00 O-Ring
Size: Metric 5X66 O-Ring
Part Number: VT50BK00-OR-5X66
Color: Black
Detailed Description
VT50BK00-OR-5X66 is a Black, 50 Shore A, FKM (Viton®) O-Ring, a FKM Type A (General Purpose Viton®) product. It is a 50 durometer FKM (Viton®). VT50BK00 is manufactured with the following features & specifications: General Purpose Material. VT50BK00-OR-5X66 is Metric size 5X66 O-Ring also referred to as 5mm (Cross Sectional Diameter (CS)) x 66mm (Inside Diameter (ID)). Material: 50 Durometer FKM VT50BK00 O-Ring Size: Metric 5X66, 5mm CS X 66mm ID (0.197" CS X 2.598" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | VT50BK00 |
| Material | FKM (Viton®) |
| Subtype | FKM Type A (General Purpose Viton®) |
| Color | Black |
| Durometer | 50 Shore A Hardness |
| High Temperature | 225 °C / 437 °F |
| Low Temperature | -26 °C / -15 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 5X66 |
| Cross Section (CS) | 5.00 mm / 0.197 in |
| Inside Diameter (ID) | 66.00 mm / 2.598 in |
VT50BK00 is a 50 shore A black FKM Type A compound designed for applications requiring very soft, highly conformable sealing. This low durometer material is ideal for O-rings and gaskets used in low pressure systems, delicate sealing surfaces, or applications where minimal compression force is available. It provides excellent resistance to heat, fuels, oils, and a wide range of industrial chemicals, along with strong durability against ozone, weathering, and aging. With a service temperature range of -26°C to 225°C, VT50BK00 meets ASTM D2000 M2HK607 requirements and offers a cost-effective solution for flexible sealing needs.
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 essential. Lower durometer FKM materials like 50A are selected for applications requiring enhanced flexibility and improved sealing in static conditions. These compounds maintain strong chemical resistance and thermal stability while offering better conformability compared to harder grades. While highly versatile, FKM materials are generally not recommended for hot water, steam, or certain polar solvents, making proper material selection important for long-term sealing performance.
Keywords: VT50BK00, VT 50BK00, VT-50BK00, VT50 BK00, FKM Type A, 50A fluorocarbon rubber, low durometer FKM, soft FKM O-rings, flexible gasket material, ASTM D2000 M2HK607, chemical resistant elastomer, oil resistant sealing rubber, Viton equivalent material, Datasheet, TDS, Test Report, MTR, MSDS, SDS
