ASME B16.21-2011 -AN AMERICAN NATIONAL STANDARD

Full Face Gasket Dimensions for MSS SP-51 Class 150LW, Corrosion-Resistant Cast Flanges and Flanged Fittings
2019-08-29
Gasket Size for Plastic 10K Flange
2019-08-29
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ASME B16.21-2011 -AN AMERICAN NATIONAL STANDARD

Nonmetallic Flat Gaskets for Pipe Flanges

Gasket Dimensions for ASME B16.1 Class 25, Cast Iron Pipe Flanges and Flanged Fittings

Gasket Dimensions for ASME B16.1 Class 125, Cast Iron Pipe Flanges and Flanged Fittings

Flat Ring Gasket Dimensions for ASME B16.1 Class 250, Cast Iron Pipe Flanges and Flanged Fittings

Gasket Dimensions for ASME B16.5 Class 150, Pipe Flanges and Flanged Fittings

Flat Ring Gasket Dimensions for ASME B16.5, Pipe Flanges and Flanged Fittings, Classes 300, 400, 600, and 900

Full Face Gasket Dimensions for ASME B16.24, Cast Copper Alloy Pipe Flanges and Flanged Fittings, Classes 150 and 300

Flat Ring Gasket Dimensions for ASME B16.47 Series A, Large Diameter Steel Flanges, Classes 150, 300, 400, and 600

Flat Ring Gasket Dimensions for ASME B16.47 Series B, Large Diameter Steel Flanges, Classes 75, 150, 300, 400, and 600

Full Face Gasket Dimensions for MSS SP-51 Class 150LW, Corrosion-Resistant Cast Flanges and Flanged Fittings

 

Gasket References Tolerances
ASMEB16.1, Cast Iron Pipe Flanges and Flanged Fittings (a) Outside diameter for
ASME B16.5, Pipe Flanges and Flanged Fittings     (1) NPS 12 and smaller:
ASME B16.24, Cast Copper Alloy Pipe Flanges and         +0.0, −1.5 mm (+0.0, −0.06 in.)
Flanged Fittings: Classes 150, 300, 400, 600, 900, 1500, and 2500     (2) NPS 14 and larger:
ASME B16.47, Large Diameter Steel Flanges         +0.0, −3.0 mm (+0.0, −0.12 in.)
ASME B36.10M, Welded and Seamless Wrought Steel Pipe (b) Inside diameter for
    (1) NPS 12 and smaller, ±1.5 mm (±0.06 in.)
    (2) NPS 14 and larger, ±3.0 mm (±0.12 in.)
    (3) bolt circle diameter, ±1.5 mm (±0.06 in.)
    (4) center to center of adjacent bolt holes, ±1.0 mm (±0.03 in.)