Find the Right Fit for Your Application
300 lb. Full Face Gasket ANSI Flange Dimension Specifications
Proper sizing is key to maintaining an effective seal. Use this chart to determine the right full face gasket size for your ANSI/ASME Class 300 pipe flanges. If you need further assistance in choosing the right gasket for your application, our applications engineers are here to help.
300lb Full Face ANSI Flange Dimensions Specifications
| Nominal Pipe Size | Gasket I.D. | Gasket O.D. |
|---|---|---|
| 1" | 1 5/16" | 4 7/8" |
| 1 1/4" | 1 21/32" | 5 1/4" |
| 1 1/2" | 1 29/32" | 6 1/8" |
| 2" | 2 3/8" | 6 1/2" |
| 2 1/2" | 2 7/8" | 7 1/2" |
| 3" | 3 1/2" | 8 1/4" |
| 3 1/2" | 4" | 9" |
| 4" | 4 1/2" | 10" |
| 5" | 5 9/16" | 11" |
| 6" | 6 5/8" | 12 1/2" |
| 8" | 8 5/8" | 15" |
| 10" | 10 3/4" | 17 1/2" |
| 12" | 12 3/4" | 20 1/2" |
| 14" | 14" | 23" |
| 16" | 16" | 25 1/2" |
| 18" | 18" | 28" |
| 20" | 20" | 30 1/2" |
| 22" | 22" | 33" |
| 24" | 24" | 36" |
| 26" | 26" | 38 1/4" |
| 28" | 28" | 40 3/4" |
| 30" | 30" | 43" |
| 32" | 32" | 45 1/4" |
| 34" | 34" | 47 1/2" |
| 36" | 36" | 50" |
| 38" | 38" | 52 1/4" |
| 40" | 40" | 54 1/2" |
| 42" | 42" | 57" |
| 44" | 44" | 59 1/4" |
| 46" | 46" | 61 1/2" |
| 48" | 48" | 65" |
| 4 | 3/4" | 3 1/2" |
| 4 | 3/4" | 3 7/8" |
| 4 | 7/8" | 4 1/2" |
| 8 | 3/4" | 5" |
| 8 | 7/8" | 5 7/8" |
| 8 | 7/8" | 6 5/8" |
| 8 | 7/8" | 7 1/4" |
| 8 | 7/8" | 7 7/8" |
| 8 | 7/8" | 9 1/4" |
| 12 | 7/8" | 10 5/8" |
| 12 | 1" | 13" |
| 16 | 1 1/8" | 15 1/4" |
| 16 | 1 1/4" | 17 3/4" |
| 20 | 1 1/4" | 20 1/4" |
| 20 | 1 3/8" | 22 1/2" |
| 24 | 1 3/8" | 24 3/4" |
| 24 | 1 3/8" | 27" |
| 24 | 1 5/8" | 29 1/4" |
| 24 | 1 5/8" | 32" |
| 28 | 1 7/8" | 34 1/2" |
| 28 | 1 7/8" | 37" |
| 28 | 1 7/8" | 39 1/4" |
| 28 | 1 7/8" | 41 1/2" |
| 28 | 1 7/8" | 43 1/2" |
| 32 | 2 1/8" | 46" |
| 32 | 2 1/8" | 48" |
| 36 | 2 1/8" | 50 1/4" |
| 36 | 2 1/8" | 52 3/4" |
| 36 | 2 1/8" | 55" |
| 40 | 2 1/8" | 57 1/4" |
| 40 | 2 1/8" | 60 3/4" |
Standard thickness is 1/16″ and 1/8″. Other thicknesses available by special order.