Seal Details
Type: A4
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Robust, short working length, highly accommodating and reliable, rubber diaphragm balanced seal which provides enhanced seal capability, performance and life.
Suitable for common originally American standard housing and working length dimensions. Improved design features further enhance this popular seal.
Available as Type A4 with a Type 11 boot-mounted seat, or as Type A4J with a Type 31 ‘O’-Ring mounted stationary.
Imperial Dimensions
| D0 | Size Code | D1 | D3 | L1 | L2 |
| 0.5 | 0127 | 1 | 1.187 | 0.813 | 0.312 |
| 0.625 | 0158 | 1.25 | 1.312 | 0.875 | 0.405 |
| 0.75 | 0191 | 1.375 | 1.438 | 0.875 | 0.405 |
| 0.875 | 0222 | 1.5 | 1.564 | 0.937 | 0.405 |
| 1 | 0254 | 1.625 | 1.783 | 1 | 0.437 |
| 1.125 | 0286 | 1.75 | 1.908 | 1.062 | 0.437 |
| 1.25 | 0317 | 1.875 | 2.079 | 1.062 | 0.437 |
| 1.375 | 0349 | 2 | 2.204 | 1.125 | 0.437 |
| 1.5 | 0381 | 2.125 | 2.329 | 1.125 | 0.437 |
| 1.625 | 0412 | 2.375 | 2.636 | 1.375 | 0.5 |
| 1.75 | 0444 | 2.5 | 2.761 | 1.375 | 0.5 |
| 1.875 | 0476 | 2.625 | 2.88 | 1.5 | 0.5 |
| 2 | 0508 | 2.75 | 3.011 | 1.5 | 0.5 |
| 2.125 | 0539 | 3 | 3.256 | 1.687 | 0.562 |
| 2.25 | 0571 | 3.125 | 3.381 | 1.687 | 0.562 |
| 2.375 | 0603 | 3.25 | 3.506 | 1.812 | 0.562 |
| 2.5 | 0635 | 3.375 | 3.631 | 1.812 | 0.562 |
| 2.625 | 0666 | 3.375 | 3.875 | 1.937 | 0.625 |
| 2.75 | 0698 | 3.5 | 4 | 1.937 | 0.625 |
| 2.875 | 0730 | 3.75 | 4.125 | 2.062 | 0.625 |
| 3 | 0762 | 3.875 | 4.25 | 2.062 | 0.625 |