Product Name: Type F Flange Insulation Gasket Kit
Standard: ASME B16.5 (WN, RF)
Gasket Material: G10 + PTFE
Sleeve Material: G10
Washer Material: G10 + ZPS
Gasket Size: 2 Inch (DN50, 50 mm)
Pressure Rating: Class 150 LB (PN20)
Source: https://www.landeepipefitting.com/type-f-flange-insulation-gasket-kit-g10-2-inch-cl150-lb.html