Click and Collect now available during checkout.
Please note: Our trade counter is closed until further notice.

Close X

Price Breaks

Quantity

Prices

2+

£1.61 each

19+

£1.52 each

29+

£1.50 each

39+

£1.49 each

49+

£1.47 each

74+

£1.45 each

99+

£1.36 each

199+

£1.34 each

249+

£1.32 each

499+

£1.31 each

999+

£1.27 each

  • 19x40x8mm Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring R21 / SC
  • 19x40x8mm Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring R21 / SC
19x40x8mm Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring R21 / SC
Great rates on shipping on any order regardless of size

19x40x8mm Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring R21 / SC

Spotted a mistake on this product?

0.012000kg

Add to a Save List

Share this product with Friends or Colleagues

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: 19mm
Outside Diameter: 40mm
Width: 8mm
Shaft Size not Inside Diameter (d)
=
19mm
Outside Diameter (D)
=
40mm
Width (b)
=
8mm
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 C to 120deg C. It also functions well under dry environment, but only for intermittent periods.
R21 / SC design cross section

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.
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

  • Isaiah Horn, United Kingdom 19/12/2019

    5 of 5 Stars!
    The oil seals I ordered from you came next day, very pleased

  • Liam Brierley, United kingdom 01/10/2019

    5 of 5 Stars!
    Called in at your trade counter for replacement oil seals and was served quickly and professionally with top quality seals.

  • Kate Cesar, United Kingdom 08/03/2018

    5 of 5 Stars!
    thanks for the help and assistance provided by your call center

  • Jon Sammy, United Kingdom 10/06/2015

    5 of 5 Stars!
    Perfect size for my application. Cheap too. I will buy from here again.

Write a Product Review

19x40x8mm Nitrile Rubber Rotary Shaft Oil Seal with Garter Spring R21 / SC
*
*
*
Rating:
BAD
GOOD *

Please rate and write your honest review of this item in up to 300 characters:

* Required Fields *

Brands

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
WN7 3XJ
United kingdom

The product has been added to your saved list.