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Ansi 150 Flange and 300# Full Face Flanged Gaskets

Ansi 150 Flange and 300# Full Face Flanged Gaskets

Full Faced Flange Gaskets are great for more industrial applications

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 LB 250-300 LB
Flange Size OD ID Holes Hole Dia. Bolt Circle Dia. OD ID Holes Hole Dia. Bolt Circle Dia.
1/2″ 3 1/2 27/32 4 5/8 2 3/8 3 3/4 27/32 4 5/8 2 5/8
3/4″ 3 7/8 1 1/16 4 5/8 2 3/4 4 5/8 1 1/16 4 3/4 3 1/4
1″ 4 1/4 1 5/16 4 5/8 3 1/8 4 7/8 1 5/16 4 3/4 3 1/2
1 1/4″ 4 5/8 1 21/32 4 5/8 3 1/2 5 1/4 1 21/32 4 3/4 3 7/8
1 1/2″ 5 1 29/32 4 5/8 3 7/8 6 1/8 1 29/32 4 3/4 4 1/2
2″ 6 2 3/8 4 3/4 4 3/4 6 1/2 2 3/8 8 7/8 5
2 1/2″ 7 2 7/8 4 3/4 5 1/2 7 1/2 2 7/8 8 7/8 5 7/8
3″ 7 1/2 3 1/2 4 3/4 6 8 1/4 3 1/2 8 7/8 6 5/8
3 1/2″ 8 1/2 4 8 3/4 7 9 4 8 7/8 7 1/4
4" 9 4 1/2 8 3/4 7 1/2 10 4 1/2 8 7/8 7 7/8
4 1/2″ 9 1/4 5 8 3/4 7 3/4 10 1/2 5 8 7/8 8 1/2
5″ 10 5 9/16 8 7/8 8 1/2 11 5 9/16 8 7/8 9 1/4
6″ 11 6 5/8 8 7/8 9 1/2 12 1/2 6 5/8 12 7/8 10 5/8
7″ 12 1/2 7 5/8 8 7/8 10 3/4 14 7 5/8 12 7/8 11 7/8