Sealing washers are used to close the flange / screw against pressure compared to flat washers. Common usage areas of the super (O-ring) washers are the automotive industry plus the hydraulic and pneumatic sectors.
Nitrile rubber (NBR)
Resistant to oil and air pressure
Resistance to heat and cold
Inelastic surface
Provides excellent durability
(Red denotes the dimensions of the washer available on this listing)
| Size | Internal Dia | External Dia | Thickness |
| 1/8" | 10.40 | 15.80 | 2.00 |
| 1/4" | 14.00 | 20.60 | 2.00 |
| 3/8" | 17.30 | 23.70 | 2.00 |
| 1/2" | 21.70 | 28.60 | 2.00 |
| 3/4" | 28.60 | 34.80 | 2.00 |
| 1" P | 34.30 | 42.80 | 2.50 |
| 1 1/4" | 43.40 | 52.40 | 2.50 |
| 1 1/2" | 48.80 | 58.60 | 2.50 |
| 2" P | 61.90 | 73.00 | 2.50 |
Dimensions given in metric however these are BSP washers