ISO standard - Full face flange gasket size - British unit (inch)
| ISO Standard - Full face flange gasket size (British unit) | |||||||||||
| PN2.5, PN6 | PN10 | PN16 | PN20 | PN25 | PN40 | ||||||
| DN | N holes | DN | N holes | DN | N holes | DN | N holes | DN | N holes | DN | N holes |
| 3/8" | 4 | 3/8" | 4 | 3/8" | 4 | - | - | 3/8" | 4 | 3/8" | 4 |
| 1/2" | 4 | 1/2" | 4 | 1/2" | 4 | 1/2" | 4 | 1/2" | 4 | 1/2" | 4 |
| 3/4" | 4 | 3/4" | 4 | 3/4" | 4 | 3/4" | 4 | 3/4" | 4 | 3/4" | 4 |
| 1" | 4 | 1" | 4 | 1" | 4 | 1" | 4 | 1" | 4 | 1" | 4 |
| 1 1/4" | 4 | 1 1/4" | 4 | 1 1/4" | 4 | 1 1/4" | 4 | 1 1/4" | 4 | 1 1/4" | 4 |
| 1 1/2" | 4 | 1 1/2" | 4 | 1 1/2" | 4 | 1 1/2" | 4 | 1 1/2" | 4 | 1 1/2" | 4 |
| 2" | 4 | 2" | 4 | 2" | 4 | 2" | 4 | 2" | 4 | 2" | 4 |
| 2 1/2" | 4 | 2 1/2" | 8 | 2 1/2" | 8 | 2 1/2" | 4 | 2 1/2" | 8 | 2 1/2" | 8 |
| 3" | 4 | 3" | 8 | 3" | 8 | 3" | 4 | 3" | 8 | 3" | 8 |
| 4" | 4 | 4" | 8 | 4" | 8 | 4" | 8 | 4" | 8 | 4" | 8 |
| 5" | 8 | 5" | 8 | 5" | 8 | 5" | 8 | 5" | 8 | 5" | 8 |
| 6" | 8 | 6" | 8 | 6" | 8 | 6" | 8 | 6" | 8 | 6" | 8 |
| 8" | 8 | 8" | 8 | 8" | 12 | 8" | 8 | 8" | 12 | 8" | 12 |
| 10" | 12 | 10" | 12 | 10" | 12 | 10" | 12 | 10" | 12 | 10" | 12 |
| 12" | 12 | 12" | 12 | 12" | 12 | 12" | 12 | 12" | 16 | 12" | 16 |
| 14" | 12 | 14" | 16 | 14" | 16 | 14" | 12 | 14" | 16 | 14" | 16 |
| 16" | 16 | 16" | 16 | 16" | 16 | 16" | 16 | 16" | 16 | 16" | 16 |
| 18" | 16 | 18" | 20 | 18" | 20 | 18" | 16 | 18" | 20 | 18" | 20 |
| 20" | 20 | 20" | 20 | 20" | 20 | 20" | 20 | 20" | 20 | 20" | 20 |
| 24" | 20 | 24" | 20 | 24" | 20 | 24" | 20 | 24" | 20 | 24" | 20 |
| - | - | 28" | 24 | 28" | 24 | - | - | 28" | 24 | - | - |
| - | - | 32" | 24 | 32" | 24 | - | - | 32" | 24 | - | - |
| - | - | 36" | 28 | 36" | 28 | - | - | 36" | 28 | - | - |
| - | - | 40" | 28 | 40" | 28 | - | - | 40" | 28 | - | - |
| - | - | 48" | 32 | 48" | 32 | - | - | 48" | 32 | - | - |
| - | - | 56" | 36 | 56" | 36 | - | - | 56" | 36 | - | - |
| - | - | 64" | 40 | 64" | 40 | - | - | 64" | 40 | - | - |
| - | - | 72" | 44 | 72" | 44 | - | - | 72" | 44 | - | - |
| - | - | 80" | 48 | 80" | 48 | - | - | 80" | 48 | - | - |
Notice DN is norminal diameter N holes is number of bolt holes
Contact details
Westbound Engineering Co., Ltd.
313/2 Phra-rama9 15, Phra-rama9 rd.,
Huaykwang, Bangkapi, Bangkok, Thailand, 10130
Tel : (+66)2-719-7300-8
Fax : (+66)2-719-7309
Email : info@thaiseal.com
Contact details
Westbound Engineering Co., Ltd.
313/2 Phra-rama9 15, Phra-rama9 rd.,
Huaykwang, Bangkapi, Bangkok, Thailand, 10130
Tel : (+66)2-719-7300-8
Fax : (+66)2-719-7309
Email : info@thaiseal.com
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