Product Name: API 6A RTJ Gasket
Type: Oval Ring Type Joint (R Series)
Design Standards: ASME B16.20, API 6A
Material: ASTM A182 F51, Duplex Stainless Steel
Size: Custom
Pressure Rating: Class 600 LB, PN100
Surface: Yellow PTFE Coating
Manufacturing Process: CNC Machining → Surface Finishing → Dimensional Inspection → PTFE Coating → Final Inspection
Applications

Source: https://www.landeepipefitting.com/ptfe-coated-rtj-gasket-api-6a-astm-a182-f51-600-lb-oval.html