Bonded Washers

AR Bearings & Transmissions stock all international standard size bonded washers, to suit a wide range of both imperial and metric thread sizes.
Metals
EN8 mild steel - zinc plated (yellow) is the most common or standard metal component.
316 Stainless steel washers are also available.
Rubbers
Nitrile (NBR) is the most commonly used.
Viton (fluorocarbon) is also very widely available across the range.
Other rubbers are available – usually on a made to order basis these are:
Hydrogenated Nitrile (HNBR) Silicone Flurosilicone
Ethylene Propylene (EPDM) Neoprene
Types
There are basically two types of bonded washer, the traditional standard non centralising type, which fit loosely over the thread.
Also available is the newer self centralising type which has an extra membrane of rubber that is designed to lightly grip the thread thus centralising the seal.
Technical Assistance
If you are not sure which rubber or metal and type you require, please give us as much information about your application and we advise you accordingly of the various option.





