Gasket - Full Face, ANSI Class 250/300 (in)

Written by Matt Milbury. Posted in Gasket Datasheets

Gasket - Full Face, ANSI Class 250/300, B16.21 (in) Datasheet

  • Dimensions to ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges

data gasket full faceFull face gasket

Pipe Size (NPS)Gasket Inside DiameterGasket Outside DiameterNumber of Bolt HolesDiameter of Bolt HolesBolt Circle Diameter
1/2 - - - - -
3/4 - - - - -
1 1 5/16 4 7/8 4 3/4 3 1/2
1 1/4 1 21/32 5 1/4 4 3/4 3 7/8
1 1/2 1 29/32 6 1/8 4 7/8 4 1/2
2 2 3/8 6 1/2 8 3/4 5
2 1/2 2 7/8 7 1/2 8 7/8 5 7/8
3 3 1/2 8 1/4 8 7/8 6 5/8
3 1/2 4 9 8 7/8 7 1/4
4 4 1/2 10 8 7/8 7 7/8
5 5 9/16 11 8 7/8 9 1/4
6 6 5/8 12 1/2 12 7/8 10 5/8
8 8 5/8 15 12 1 13
10 10 3/4 17 1/2 16 1 1/8 15 1/4
12 12 3/4 20 1/2 16 1 1/4 17 3/4
14 14 23 20 1 1/4 20 1/4
16 16 25 1/2 20 1 3/8 22 1/2
18 18 28 24 1 3/8 24 3/4
20 20 30 1/2 24 1 3/8 27
22 22 33 24 1 5/8 29 1/4
24 24 36 24 1 5/8 32
26 26 38 1/4 28 1 7/8 34 1/2
28 28 40 3/4 28 1 7/8 37
30 30 43 28 1 7/8 39 1/4
32 32 45 1/4 28 1 7/8 41 1/2
34 34 47 1/2 28 1 7/8 43 1/2
36 36 50 32 2 1/8 46
38 38 52 1/4 32 2 1/8 48
40 40 54 1/2 36 2 1/8 50 1/4
42 42 57 36 2 1/8 52 3/4
44 44 59 1/4 36 2 1/8 55
46 46 61 1/2 40 2 1/8 57 1/4
48 48 65 40 2 1/8 60 3/4
Pipe Size (NPS)Gasket Inside DiameterGasket Outside DiameterNumber of Bolt HolesDiameter of Bolt HolesBolt Circle Diameter