Gaskets are static sealing devices which are used as a seal to prevent the leakage of fluids between mating flanges or maintain the electrical continuity between the mating flanges as in waveguides. Conductive gaskets generally refers to elastomers that have conductive materials in them. In other words, these materials are electrically conductive. Volume resistivity it simplistic terms refers to how much the gasket resists electrical currents. Because rubbers can be supplied in various durometer it makes it possible for the gasket to prevent leakage well under the conditions of “less than-perfect” mating surfaces.
The flat gasket is the oldest method and is used where a reusability is not required and where the possibility of leakage can be tolerated, the flat gasket may be the best choice. However, this approach has several limitations.
- Bolt load and flanges deflections causes permanent distortion.
- Retorquing may be required.
- Flange separation exposes larger area pressure and allows fluid to attack gasket material and the gasket may swell and disintegrate.
NEDC can supply the flat gasket made from elastomers qualified to the MIL-DTL-83528F (Revision F). In addition to manufacturing MIL-DTL-83528F Types A, B, C, D, F, G, K, L, and M, NEDC also supplies other conductive elastomers such as rubbers filled with nickel graphite, silver plated copper, and others. NEDC has lots of experience in the gasket manufacturing environment. NEDC maintains the capability to die-cut, waterjet cut, and fabricate conductive gaskets. NEDC can supply any of the following conductive elastomers in a variety of forms:
- Wire Mesh Gaskets
- MIL-DTL-83528F Gaskets
- Ladders Gaskets
- Connector Gaskets
- Oriented Wire Gaskets
NEDC can be considered your one-stop shop for conductive gaskets.