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
Quinn Case, United Kingdom 18/12/2019
Great quality, good value for money and super service. I will buy all my oil seals from you in future.
Philip Leblanc, United Kingdom 26/09/2019
Thank you for helping me find the correct oil seals.
John Greene, United kingdom 28/05/2019
Good quality seals for a very reasonable price. Delivered quickly with the bearings I ordered.
Edward Muldoon, United kingdom 20/07/2015
I recently bought the nitrile rubber rotary shaft seal and have found it to be an excellent product in durability and in great value for money. I would definitely recommend this product and simply bearings as a sound business to use
David Raymond, United Kingdom 08/07/2015
Chemical resistant chart was very helpful when deciding on which material