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
Tyson Hughes, United Kingdom 18/12/2019
Brilliant attitude over the telephone. Clear, concise and confident in the oil seals they sold to me.
Ben Hamilton, United Kingdom 27/09/2019
Thanks for getting my oil seals to me so quickly. Brilliant service.
Shamar Lawson, United Kingdom 18/08/2015
Just received the seal in this morning's post after ordered it yesterday afternoon. Thank you very much for the quick turnaround. Will be sure to order from you again soon. Thanks again.
Michael Paxton, United Kingdom 25/03/2015
Great website, great quality, great service. Great !!!!