Product Name: Zinc Coated RTJ Gasket
Type: Ring Type Joint Gasket, RTJ, Octagonal, R Type
Design Standard: ASME B16.20
Material: Soft Iron
Size: 4 Inch, DN100, R37
Pressure Class: Class 900 LB, PN150
Surface Treatment: Electroplated Zinc Coated
Source: https://www.landeepipefitting.com/zinc-coated-rtj-gasket-soft-iron-4-inch-900-lb-octagonal.html