Image shown is representative and may differ from the actual product in size, proportions, and color shade
4.500 in
(114.30 mm)
6.880 in
(174.75 mm)
1/2"
FKM VT75BK50 Ring Gasket, Size: 150#-4"-RN-1/2"
Material: FKM VT75BK50 Ring Gasket
Size: 150#-4"-RN-1/2" Ring Gasket
Part Number: VT75BK50-150#-4"-RN-1/2"
VT75BK50
FKM (Viton®)
75
Shore A
FKM Type XLT (Extreme Low Temp Viton®)
Ultra Low Temperature Material
Color: Black
Detailed Description
VT75BK50-150#-4"-RN-1/2" is a Black, 75 Shore A, FKM (Viton®) Ring Gasket, a FKM Type XLT (Extreme Low Temp Viton®) product. It is a 75 durometer FKM (Viton®). [VT75BK50 is manufactured with the following features & specifications: Ultra Low Temperature Material, General Purpose Material. VT75BK50-150#-4"-RN-1/2" is size 150#-4"-RN-1/2" Ring Gasket also referred to as 4 (Pipe Size) x 114.3mm (ID) x 174.75mm (OD) x 1/2" (Thickness). VT75BK50-150#-4"-RN-1/2" is a size 4, 150#-RN ASME Ring Gasket. Material: 75 Durometer FKM VT75BK50 Ring Gasket Size: 150#-4"-RN-1/2", 4 Pipe Size X 114.3mm ID X 174.75mm OD X 1/2" Thickness
| Technical Specification | Value |
|---|---|
| Compound Number | VT75BK50 |
| Material | FKM (Viton®) |
| Subtype | FKM Type XLT (Extreme Low Temp Viton®) |
| Color | Black |
| Durometer | 75 Shore A Hardness |
| High Temperature | 225 °C / 437 °F |
| Low Temperature | -48 °C / -54 °F |
| Geometry Specifications | |
| Type | Ring Gasket |
| Size | 150#-4"-RN-1/2" |
| Pipe Size | 4 |
| ID | 114.30 mm / 4.500 in |
| OD | 174.75 mm / 6.880 in |
| Thickness | 1/2" |
VT75BK50 is a black FKM Type XLT fluoroelastomer engineered for extreme low temperature sealing applications involving O-rings, gaskets, and custom molded elastomer components. This compound features a hardness of approximately 75 Shore A and is designed to maintain flexibility and sealing reliability where conventional fluorocarbon materials may become too stiff. FKM XLT materials are commonly selected for sealing systems that require both chemical resistance and extended low temperature performance.
VT75BK50 provides excellent resistance to fuels, oils, and a wide range of industrial chemicals while also offering strong resistance to weathering, ozone, and aging. The recommended service temperature range is -48°C to 225°C (-54°F to 437°F) with excursions down to approximately -60°C, supporting reliable sealing performance in demanding environments. This material meets AMS 7379 requirements and is often used for O-rings, gaskets, and sealing components in aerospace systems, chemical processing equipment, and other industrial applications that require low temperature FKM elastomer performance.
Keywords: Datasheet, TDS, Test Report, MTR, MSDS, SDS
