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Gasket Dimensions for Flat Ring and Full Face Applications

JIS – 20K

Nominal Diameter IBC and Full Face Gasket Inner Diameter IBC Gasket Outer Diameter Full Face Gasket 
Outer Diameter Bolt P.C.D. Diameter of Bolt Holes Number of Bolt Holes
10 18 53 90 65 15 4
15 22 58 95 70 15 4
20 28 63 100 75 15 4
25 35 74 125 90 19 4
32 43 84 135 100 19 4
40 49 89 140 105 19 4
50 61 104 155 120 19 8
65 77 124 175 140 19 8
80 90 140 200 160 23 8
90 103 150 210 170 23 8
100 115 165 225 185 23 8
125 141 203 270 225 25 8
150 167 238 305 260 25 12
200 218 283 350 305 25 12
250 270 356 430 380 27 12
300 310 406 480 430 27 16
350 358 450 540 480 33 16
400 409 510 605 540 33 16
450 460 575 675 605 33 20
500 511 630 730 660 33 20
550 562 684 795 720 39 20
600 613 734 845 770 39 24