Sheet & Cut Gasket products

FLAT RING GASKETS TO ASME B16.21 ( Used with ASME/ANSI B16.5 FF 150 lbs flanges )

NOMINAL PIPE SIZE ID OD NO OF HOLES HOLE
DIAMETER		 BCD
DN INCH
15 ½ 21 89 4 5/8 60.3
20 ¾ 27 98 4 5/8 69.9
25 1 33 108 4 5/8 79.4
32 1 1/4 42 117 4 5/8 88.9
40 1 1/2 48 127 4 5/8 98.4
50 2 60 152 4 ¾ 120.7
65 2 1/2 73 178 4 ¾ 139.7
80 3 89 191 4 ¾ 152.4
90 3 1/2 102 216 8 ¾ 177.8
100 4 114 229 8 ¾ 190.5
125 5 141 254 8 7/8 215.9
150 6 168 279 8 7/8 241.3
200 8 219 343 8 7/8 298.5
250 10 273 406 12 1 362
300 12 324 483 12 1 431.8
350 14 356 533 12 1 1/8 476.3
400 16 406 597 16 1 1/8 539.8
450 18 457 635 16 1 1/8 577.9
500 20 508 699 20 1 1/8 635
600 24 610 813 20 1 3/8 749.3