20x28x4-R21-NBR Rotary Shaft Seal - Nitrile Rubber (NBR) Metric 20 x 28 x 4

20x28x4-R21-NBR Rotary Shaft Seal - Nitrile Rubber (NBR) Metric 20 x 28 x 4
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Brand:  TTO
Measurement Unit  Metric
Material  Nitrile Rubber (NBR)
Inside Diameter  20.00mm
Outside Diameter  28.00mm
Width  4.00mm
Lip Style  R21 Single Lip

Availability  

  

Our Price:  £3.16(Exc. 20% VAT)(£3.79 Inc. VAT)
–+

Bulk Discounts:

Quantity Price
1 to 4 £3.16
5 to 9 £2.05
10+ £1.58
  (2 Reviews)
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20x28x4-R21-NBR Rotary Shaft Seal - Nitrile Rubber (NBR) Metric 20 x 28 x 4

Oil Seals or Rotary Shaft Seals are designed to provide a barrier to retain lubricant and to keep out contamination. They are available in metric and imperial sizes with a variety of sealing lip arrangements the most common of which are:

  • R21 - Single Sprung Lip
  • R23 - Single Sprung Lip with the addition of a wiper lip to help keep out contamination

Oil Seals are constructed using a steel case which is usually covered in rubber. Various materials are available the most common materials are:

  • Nitrile Rubber (NBR) - Temperature Range -40 to +110 degree C - Usually coloured Black
  • Viton Rubber (FPM) - Temperature Range -30 to +225 degrees C - Usually coloured Brown
  • Silicone (SI) - Temperature Range -60 to +225 degrees C - Usually coloured Red
Oil Seal Lip Designs
Average Rating (2 Reviews):  
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Rating:  
Great service
04 June 2019  | 

I couldn't fault the service or the price

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Rating:  
20x28x4-R21-NBR Rotary Shaft Sea
05 February 2019  | 

All in accordance with order and fast service

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