RING-JOINT Gasket Marking Identification ASME B16.20

[1] Manufacturer’s name.

[2] Gasket number.

[3] Material specification.

#	Ring Gasket Material	Identification	Marking's example
1	Soft Iron	D	R51D
2	5Cr-0.5Mo	F5	R51F5
3	Type 304	S 304	R51S304
4	Type 316	S 316	R51S316

Grooved Metal Gasket Marking Identification ASME B16.20

[1] Manufacturer’s name

[2] Flange size

[3] Pressure class

[4] Metal core / Covering material / Centering-ring metal abbreviation (*)

[5] Flange identification

[6] ASME B16.20 designation

(*) See Table GM-3.1-1 of ASME B16.20.

Spiral Wound Gasket Marking Identification ASME B16.20

[1] Manufacturer’s name

[2] Flange size

[3] Pressure class

[4] Winding / Filler /Centering-and inner-ring metal abbreviation (*)

[7] Flange identification

[8] ASME B16.20 designation

(*) Refer to Color Coding in Table SW-3-1 of ASME B16.20 2017.

 

See other Material Markings.