Dowty Seals are also known as Bonded Seals or Dowty Bonded Washers. They are high pressure seals used in the Mechanical, Hydraulic and Pneumatic sectors. Dowty Seals have generally replaced copper washers in high pressure applications. A trapezoidal shaped rubber sealing element is bonded to the inner of a metal washer to produce the finished part. Used in circumstances where high pressures demand greater sealing capacity than can be obtained with Copper washers. The metal ring prevents over compression and extrusion of the pliable ring.
CHARACTERISTICS OF DOWTY SEALS
• Ideal Pressure Gasket
• Reliable sealing at high & low pressure
• High & low temperature capability
• Reduced bolt torque with no loss of tightening loads
• Metal ring prevents rubber compression
The most common washer types are Mild Steel or Stainless steel, but again other more unusual metals can be supplied. Different combinations of metal washer to rubber sealing elements can be produced.
Dowty Seals are available in a choice of materials including:
• Mild Steel
• Stainless Steel
WHY USE DOWTY SEALS?
Dowty Seals were originally designed to replace copper type washers in high-pressure systems. Dowty Seals comprise of a metal washer and an elastomeric ring dowty inside the diameter. The metal washer prevents over-compression and limits deformation of the elastomeric ring.