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3.37x4.87x0.5 inch Metal Cased Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring

  • 3.37x4.87x0.5 inch Metal Cased Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring
  • 3.37x4.87x0.5 inch Metal Cased Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring
Description:
Oil Seals: Designed to provide a reliable barrier against the escape of oils and greases and to [show more...]
Brand: Simply NBR Seals
Inside Diameter: 85.60mm = 3.37 inch
Outside Diameter: 123.70mm = 4.87 inch
Width: 12.70mm = 0.5 inch

0.100000kg
New £7.08 ex VAT
Stock:  This item is available from stock
Oil Seals: Designed to provide a reliable barrier against the escape of oils and greases and to prevent 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, Trouble-free operation of your equipment.

Shaft Size not Inside Diameter (d)
=
85.598mm = 3.37 inch
Outside Diameter (D)
=
123.698mm = 4.87 inch
Width (b)
=
12.7mm = 0.5 inch
Oil Seals

An oil seal normally consists of three basic components: The Sealing Element (the rubber part), the Metal Case, and the Spring.
They are a widely used sealing component. The function of a seal is to prevent the leakage of oils or greases 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 Cto 120deg C. It also functions well under dry environment, but only for intermittent periods.

R23 / TC design cross section

Cross section of an R23 / TC style oil seal.

This is a double sealing lip seal arrangement with one primary sealing lip and a dust protection lip.

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. 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.
Nitrile Chemical Resistance

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