537 437 043 R21/SC Single Lip Nitrile Rotary Shaft Oil Seal with Garter Spring 4.3/8x5.3/8x7/16 Inch

In stock
SKU: 537x437x043-R21
Single lip nitrile rubber imperial rotary shaft oil seal with garter spring 4.3/8" inside x 5.3/8" outside x 7/16" wide.
Regular price From £9.38
£7.82 exc.VAT

Product details

  • SKU 537x437x043-R21
  • Inside diameter (d) 111.13mm
  • Outside diameter (D) 136.53mm
  • Width (B) 11.11mm
Seals are ideal for excluding dirt, dust, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. They are generally used as a means of protecting the bearings of rotating shafts.

The term nitrile rubber is used for acrylonitrile-butadiene rubber (NBR). This material has very good engineering properties and is a general-purpose sealing lip material. It is a copolymer manufactured from acrylonitrile and butadiene that provides good resistance to the following media:

Most mineral oils and greases with a mineral oil base
Normal fuels like gasoline, diesel and light heating oils
Animal and vegetable oils and fats and hot water