Full Face Gaskets for 300 lb ASME/ANSI Pipe Flanges

Full Face Gaskets for 300 lb ASME/ANSI Pipe Flanges

Nominal Pipe Size Gasket Number of Bolt Holes Diameter of Bolt Holes Bolt Circle
I.D. O.D.
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"