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Explore our range!

Take a glance at our wide range and find inspirational examples from an almost limitless universe of gaskets, seals and functional parts.

 
 
 
 
 
 
 
 

Bonded seals

Bonded seals are sealing rings, which consist of an outer metal ring to which a trapezoidal rubber ring is moulded on the inside. This compresses the inner rubber ring, forming a seal.

The metal ring ensures that the rubber ring is subjected to well defined compression and prevents it from being extruded through the gap.

The same basic concept can also be used to produce customised moulds for specific applications in any combination of rubber-to-metal or rubber-to-plastic-binding.

Bonded Seals are often used as bolt seals in hydraulic equipment and are commonly known as Dowty Seals or Dowty Washers.


Bonded seals are available in two types. Self-centralising or non-self-centralising. The self-centralising type has a rubber lip that maintains distance all the way around.


Advantages of the self-centralising type

  • Eliminates sealing offset
  • Eliminates leakages
  • Easy installation


Betech is also able to supply Bonded Seal Kits in Imperial and Metric sizes or as kits that are customised to perfectly match the needs of the customer.

 

Quality (QA) & Pre-qualification

ISO 9001:2008
JQS Achilles (Oil & Gas)
Sellihca (Utillities)

Raw Materials

Fluoronated Hydrocarbon | FPM

Weather resistance (relative)
Excellent
Ozone resistance (relative)
Excellent
Oil resistance (relative)
Excellent
Water resistance (relative)
Excellent
Wapor resistance (relative)
Good
Acids resistance (relative)
Excellent
Bases resistance (relative)
Average
Gas permeability (relative)
Average
Tensile strength (relative)
Limited
Max. Operating temperature (Celsius)
220
Min. Operating temperature (Celsius)
-46
Hardness, from (shore A)
50
Hardness, to (shore A)
95
Hardness, from (shore D)
0
Hardness, to (shore D)
0
Elongation (relative)
Limited
Compression set (relative)
Excellent
Vibration damping (relative)
Excellent
Abrasion resistance (relative)
Middel

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