Image shown is representative and may differ from the actual product in size, proportions, and color shade
16.000 in
(406.40 mm)
23.500 in
(596.90 mm)
16
1.130 in
(28.70 mm)
21.250 in
(539.75 mm)
1/2"
SIL SI40TR20 Full Face Gasket, Size: 150#-16"-FF-1/2"
Material: SIL SI40TR20 Full Face Gasket
Size: 150#-16"-FF-1/2" Full Face Gasket
Part Number: SI40TR20-150#-16"-FF-1/2"
SI40TR20
Silicone (VMQ)
40
Shore A
PVMQ Type Silicone
Ultra Low Temperature Material
Color: Translucent (Clear)
Detailed Description
SI40TR20-150#-16"-FF-1/2" is a Translucent (Clear), 40 Shore A, Silicone (VMQ) Full Face Gasket, a PVMQ Type Silicone product. It is a 40 durometer Silicone (VMQ). [SI40TR20 is manufactured with the following features & specifications: Ultra Low Temperature Material, General Purpose Material. SI40TR20-150#-16"-FF-1/2" is a size 16, 150#-FF ASME Full Face Gasket. Material: 40 Durometer SIL SI40TR20 Full Face Gasket Size: 150#-16"-FF-1/2", 16 Pipe Size X 406.4mm ID X 596.9mm OD X 16 Bolt Qty X 28.700mm Bolt Dia. X 539.750mm Bolt Circle X 1/2" Thickness
| Technical Specification | Value |
|---|---|
| Compound Number | SI40TR20 |
| Material | Silicone (VMQ) |
| Subtype | PVMQ Type Silicone |
| Color | Translucent (Clear) |
| Durometer | 40 Shore A Hardness |
| High Temperature | 205 °C / 401 °F |
| Low Temperature | -108 °C / -162 °F |
| Geometry Specifications | |
| Type | Full Face Gasket |
| Size | 150#-16"-FF-1/2" |
| Pipe Size | 16 |
| ID | 406.40 mm / 16.000 in |
| OD | 596.90 mm / 23.500 in |
| Bolt Qty | 16 |
| Bolt Dia. | 28.70 mm / 1.130 in |
| Bolt Circle | 539.75 mm / 21.250 in |
| Thickness | 1/2" |
SI40TR20 is a 40 shore A translucent PVMQ silicone compound engineered for ultra low temperature sealing where extreme flexibility is required. This material remains elastic down to -108°C, making it ideal for O-rings and gaskets used in cryogenic, aerospace, and cold environment industrial applications. Its low durometer allows for excellent conformability in low pressure systems, while still providing good resistance to ozone, detergents, salt water, and vegetable and animal oils. SI40TR20 meets ASTM D2000 M2GE405 requirements and delivers reliable performance in applications where standard elastomers would become brittle and fail.
PVMQ, or fluorosilicone rubber, is a specialized elastomer that combines the low temperature flexibility of silicone with improved resistance to fuels, oils, and certain solvents. These materials are widely used in O-rings and gaskets where both chemical exposure and extreme temperature conditions are present. Compared to standard silicone, PVMQ offers enhanced fuel compatibility while maintaining excellent performance in cold environments, making it a preferred choice for aerospace, automotive, and industrial sealing applications. While highly versatile, it may not match FKM in high temperature chemical resistance, so proper material selection is essential.
Keywords: SI40TR20, SI 40TR20, SI-40TR20, SI40 TR20, PVMQ silicone rubber, ultra low temp elastomer, 40A fluorosilicone, cryogenic O-rings, flexible gasket material, ASTM D2000 M2GE405, low durometer silicone, fuel resistant silicone seal, extreme cold elastomer, Datasheet, TDS, Test Report, MTR, MSDS, SDS
