Oil Seals: Designed to aid trouble-free operation of your equipment, providing an excellent barrier against the escape of oils and greases and preventing the ingress of foreign matter. Benefits: Excellent wear resistance, good running properties, high resistance to chemicals and petroleum based fuels including petrol, diesel and LPG.
An oil seal normally consists of three basic components: The Sealing Element (the nitrile rubber part), the Metal Case, and the Spring. It is a widely used sealing component. The function of a seal is to prevent the leakage of medium along the moving parts. This is mainly achieved by the sealing element. Nitrile Rubber (NBR)
NBR is the most commonly used seal material. It has good heat resistance properties, good resistance to oils, salt solutions, hydraulic oils, and gasoline. Operation temperatures are recommended from -40deg C to 120deg C. It also functions well under dry environment, but only for intermittent periods.
Cross section of an R21 / SC style oil seal.
This is a single sealing lip seal arrangement.
The seal cases are made from SAE 1008-1010 Carbon Steel and are often coated in a very thin layer of Nitrile rubber to assist sealing in the housing.
The principle function of the metal case is to impart rigidity and strength to the seal.
The spring is made from SAE 1050-1095 Carbon Spring Steel which has a protective zinc coating.
The principle function of the spring is to maintain an even gripping pressure around the shaft
Louis Marshall, United Kingdom 18/12/2019
Excellent oil seals that I received, the quality was way above most others I've used. Such a low price too, I won't be going anywhere else in a hurry!
Amare Talon, United Kingdom 18/12/2019
With the great pictures on the website it instilled confidence in my purchase of oil seals.
Ryker Alonzo, United Kingdom 25/09/2019
These oil seals were just what i needed
Lincoln Bass, Australia 30/11/2015
Good product fast delivery
Louis Broadhurst, United Kingdom 19/11/2015
Needed this oil seal quick as I run a busy working farm. Good quality. Great service.