These rubber washers are sized to suit the Hansen Large Back Nuts although they are suitable for some other applications as well. They will fit over a BSP thread of corresponding size.
| Suits BSP thread |
Part No. |
|---|---|
| 20mm ~ 3/4" | SWL 20 |
| 25mm ~ 1" | SWL 25 |
| 32mm ~ 1 1/4" | SWL 32 |
| 40mm ~ 1 1/2" | SWL 40 |
| 50mm ~ 2" | SWL 50 |
Approx BSP to metric thread equivalent
3/4" = 20mm 1" = 25mm 1 1/4" = 32mm 1 1/2" = 40mm 2" = 50mm