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.
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