Bonded Seals:

 

The Bonded Seal is now made all over the world but is universally known as Dowty Seals or Dowty Bonded Washer.  They are high pressure seals which have generally replaced copper washers.   A trapezoidal shaped rubber sealing element is bonded to a metal ring.  The metal ring prevents over compression and limits the deformation of the elastomeric element. 

 

The most common material for the Bonded Seals to be made of is Mild Steel (41A) or Stainless Steel (74A). 

 

The material used for the rubber sealing element is usually Nitrile (NBR), FKM (Viton) or EPDM. 

 

We keep in stock Mild Steel / Nitrile and Stainless Steel / Nitrile combinations.   Other version are available on request.   

 

There are also 2 types of rubber sealing element, standard and self centering.  Please advise which type you require. 

 

We can supply Bonded Seals in the following ranges :

 

Inch - BSP - French Metric - German Metric