Molded Seals

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Molded Seals

Made from a wide range of technical elastomers, Technetics Group molded solutions meet the critical temperature, chemical and mechanical requirements of the following industries: nuclear, pharmaceutical and aerospace.

Technetics produces custom, precision-molded seals and can incorporate internal and external reinforcements from an extensive selection of materials. Technetics uses compression, transfer and injection molding techniques in the manufacturing processes.

Technetics can also supply assemblies comprising molded seals and other customer required elements as well as cut gaskets from molded sheets.

Technetics can provide seals with EMI protection.

List of elastomer materials which can be used:

Elastomers

Temp Range
(°C)

Properties

SBR
Styrene Butadiene Rubber

- 20
+ 100

Good resistance to:
  • water
  • demineralised water
  • air
  • diluted acids and bases
  • ketones
Abrasion-resistant

CR
Choloroprene

- 20
+ 110

Same as SBR, with better resistance to:
  • ultraviolet rays
  • ozone
  • air
Low resistance to grease

IIR
Butyl

-20
+120

Good resistance to:
  • diluted acids and bases
  • ketones
  • very low permeability

EPDM
Ethylene Propylene

-30
+150

Good resistance to:
  • water
  • steam
  • atmospheric conditions
Low resistance to hydrocarbon

VMQ
Silicone BIO-GUARDIAN®

-60
+150

Good resistance to:
  • dry and humid heat
  • steam P≤ 6 bars
  • cold
  • very low oil resistance
  • does not age

NBR
Nitrile Rubber

-30
+110

Good resistance to:
  • aromatic hydrocarbons
  • chlorinated solvents

VMQ
Silicone BIO-GUARDIAN®

-50
+200

Same as Silicone, with better resistance to:
  • oils
  • greases
  • fuels
  • some solvents

FKM
Fluorocarbon Rubber

-20
+180

Good resistance to:
  • chlorinated solvents
  • aromatics
  • fuels
  • strong acids and bases

 

Perfluoroelastomer

-20
+300

Excellent resistance to:
  • chlorinated solvents
  • aromatics
  • strong acids and bases

Reinforced elastomer seals

Technetics can manufacture elastomer seals reinforced with the following materials to work in critical environments requiring high performance and integrity:

  • Fabrics: polyester, nylon, glass, ceramic, aramid
  • Metal : inserts and components
  • Pre-Preg : resin impregnated on structural fabric

These types of reinforced seals can be used for critical applications including aerospace, oil & gas, pharmaceutical, nuclear and industrial. Aerospace airframes and fire seals are just a couple examples of their applications.

  • Temperature : from -60 °C to +300 °C

Assemblies

Technetics can supply a complete sealing solution by the production and construction of custom assemblies comprising elastomeric seals and associated components according to customer requirements.

Cut gaskets from elastomer molded sheets

Technetics can also supply gaskets cut from molded sheets to your specific designs from the material list below or from a range of additional materials, including sponge rubber, rubber/metal laminated and more.

Molded seals with EMI protection

Based on the customer performance requirements, we can provide standard EMI Seals (extruded profiles, wire mesh wrapped around external surface) or loaded elastomer seals with silicone, flourosilicone or with loading material (aluminum, silver, or carbon).

 

 

To learn more about our Molded Seals and how Technetics can custom-engineer a solution for your application, contact us.