Description
This rotary shaft seal has an internal diameter of 20 mm, an external diameter of 42 mm and a 7 mm width. It is used to seal rotating machine components.
This seal consists of an NBR part with an external reinforcement plate and a worm spring made of spring steel. The plate is pressed in slightly during installation. To ensure a seal at the outer casing, tighter tolerances of the hole in the housing are required. Suitable for a shaft circumferential speed of up to 14 m/s.
Pros:
- Suitable for temperatures from -30 to 100°C (-22 to 212°F)
- Provided with a dust lip for protection from dirt and corrosion

![NBR Design BS Rotary Shaft Seal 20x42x7mm [5 Pieces]](https://www.toolsbunker.com/wp-content/uploads/2026/09/wedi.c41191f1_32908daf-fe05-4797-b3fb-8255d0dfe10c.jpg)




![NBR Design AS Rotary Shaft Seal 45x62x8mm [5 Pieces]](https://www.toolsbunker.com/wp-content/uploads/2026/09/wedi.c41191f1_f84d4f55-b3dc-40a3-8a23-e83209393585.jpg)


