Ansi Flange Full Face 150#, 300#

These gaskets are suitable for service with ANSI 150# rated flanged connections. Also available with ANSI 300# rated flanged connections.

  • Dimensions per ANSI B16.5 standard for pipe flanges and gaskets.
  • Dimensional Tolerances (unless otherwise stated) through 1" @ +/- 1/32", from 1" through 12" @ +/- 1/16", from 12" through 24" @+/- 3/32", and over 24" @ +/- 1/4".
  • "New Style" Flange Gasket dimensions are listed, but "Old Style" are also available.  The only difference is that "New Style" have a slightly enlarged ID on 12" and below so as not to obstruct flow when compressed (bolt holes/circles unaffected).
  • Standard Pipe Flange Gaskets are SBR Rubber (a.k.a. Red Rubber), but Neoprene, EPDM, Buna  N, Silicone, Viton (Fluoroelastomer), and other rubber compounds are also  available upon request.
  • Gasket thicknesses between 1/16" and 1/8" are readily available in most materials; standard hardness options include 40 through 80 durometer (Shore A).
 Full Face Flange Gaskets
 125-150 LB250-300 LB
Flange SizeOD          ID       HolesHole Dia.     Bolt Circle Dia.      OD          ID          HolesHole Dia.     Bolt Circle Dia.       
1/2"3 1/227/3245/82 3/83 3/427/3245/82 5/8
3/4"3 7/81 1/1645/82 3/44 5/81 1/1643/43 1/4
1"4 1/41 5/1645/83 1/84 7/81 5/1643/43 1/2
1 1/4"4 5/81 21/3245/83 1/25 1/41 21/3243/43 7/8
1 1/2"51 29/3245/83 7/86 1/81 29/3243/44 1/2
2"62 3/843/44 3/46 1/22 3/887/85
2 1/2"72 7/843/45 1/27 1/22 7/887/85 7/8
3"7 1/23 1/243/468 1/43 1/287/86 5/8
3 1/2"8 1/2483/479487/87 1/4
4"94 1/283/47 1/2104 1/287/87 7/8
4 1/2"9 1/4583/47 3/410 1/2587/88 1/2
5"105 9/1687/88 1/2115 9/1687/89 1/4
6"116 5/887/89 1/212 1/26 5/8127/810 5/8
7"12 1/27 5/887/810 3/4147 5/8127/811 7/8
8"13 1/28 5/887/811 3/4158 5/812113
9"159 5/8127/813 1/416 1/49 5/812114
10"1610 3/412114 1/417 1/210 3/4161 1/815 1/4
12"1912 3/41211720 1/212 3/4161 1/417 3 4
14"2114121 1/818 3/42314201 1/420 1/4
15"22 1/415161 1/820     
16"23 1/216161 1/821 1/425 1/216201 3/822 1/2
18"2518161 1/422 3/42818241 3/824 3/4
20"27 1/220201 1/42530 1/220241 3/827
22"29 1/222201 1/427 1/43322241 3/829 1/4
24"3224201 3/829 1/23624241 5/832
26"34 3/426241 3/831 3/438 1/426281 5/834 1/2
28"36 1/228261 3/83440 3/428281 5/837
30"38 3/430281 3/8364330281 7/839 1/4
32"41 3/432281 5/838 1/245 1/432281 7/841 1/2
34"43 3/434321 5/840 1/247 1/234281 7/843 1/2
36"4636321 5/842 3/45036322 1/846
38"48 3/438361 5/845 1/452 1/438322 1/848
40"50 3/440361 5/847 1/454 1/440362 1/850 1/4
42"5342361 5/849 1/25742362 1/852 3/4
44"55 1/444401 5/851 3/459 1/444362 1/855
46"57 1/446401 5/853 3/461 1/246402 1/857 1/4
48"59 1/248441 5/8566548402 1/860 3/4

  • Buna (Black or White)
  • EPDM (Black or White)
  • FKM Fluoroelastomer (Black or White)
  • Platinum Silicone
  • Tuf-Flex®
  • Tuf-Steel®