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2+
£1.43 each
19+
£1.35 each
29+
£1.33 each
39+
£1.32 each
49+
£1.30 each
74+
£1.29 each
99+
£1.20 each
199+
£1.19 each
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£1.17 each
499+
£1.16 each
999+
£1.12 each
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. |
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. | |
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Cross section of an R21 / SC style oil seal. This is a single sealing lip seal arrangement. |
Construction 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. |
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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 |
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