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  • 20x26x4mm Nitrile Rubber Rotary Shaft Oil Seal R23 / TC Style
  • 20x26x4mm Nitrile Rubber Rotary Shaft Oil Seal R23 / TC Style
20x26x4mm Nitrile Rubber Rotary Shaft Oil Seal R23 / TC Style
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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.

Brand / Quality: Simply NBR Seals - High Quality
Inside Diameter: 20mm
Outside Diameter: 26mm
Width: 4mm
Shaft Size not Inside Diameter(d)
Outside Diameter (D)
Width (b)
Oil Seals
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 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.

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

Viton Chemical Resistance

  • Mekhi Martin, United Kingdom 17/09/2019

    5 of 5 Stars!
    Great selection of sizes and very competive price and free delivery. Thanks

  • Bill Heinz, United kingdom 31/12/2015

    5 of 5 Stars!
    Very good quality seals for the price. Very good service and quick delivery. Very happy overall.

  • Ian Williamson, United kingdom 29/11/2015

    5 of 5 Stars!
    excellent seller, great quality and very quick delivery 👍🏻

  • Jordyn Todd, United Kingdom 18/09/2015

    5 of 5 Stars!
    Great stuff thanks a lot

  • Robert Race, United kingdom 07/08/2015

    5 of 5 Stars!
    Bike back on the road item fitted perfect

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20x26x4mm Nitrile Rubber Rotary Shaft Oil Seal R23 / TC Style

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Simply bearings are the UK's largest online retailer of bearings, seals, belts, chains, sprockets, lubricants and other associated power transmission equipment.
Simply Bearings Ltd, Halton House, Greenfold Way, Leigh
Greater Manchester
United kingdom

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