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Parker Chomerics CHO-SEAL® 2557 Non-Conductive Extruded Elastomer Specifications

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer Parker Chomerics
Trade Name CHO-SEAL®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Parker Chomerics CHO-SEAL® 2557 Non-Conductive Extruded Elastomer Specifications.pdf
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Material Notes:
Description: Chomerics manufactures a dual performance extruded gasket in one simple design. By a seam vulcanization process, CHO-SEAL or CHO-SIL conductive elastomers are extruded in parallel with non-conductive elastomers to proved EMI shielding and corrosion protection from one gasket. The outer, non-conductive gasket acts as an extra environmental seal to keep moisture away from the conductive gasket/flange interface. This prevents corrosion of the mating flange in marine or airborne environments. Co-extruded gaskets are also cost-effective, as they permit the use of existing flange designs and provide for gasket attachment via a less expensive non-conductive elastomer. A similar two gasket shielding system requires a costly double groove flange design. Typical examples of effective co-extruded gaskets include commercial and military communications equipment, rack mounted cabinetry, and aircraft doors and panels. These applications vary in required shielding performance. Each Chomerics co-extruded gasket is engineered in our applications laboratory to match the geometric constraints, closure requirements and shielding performance demanded by the application.Information provided by Chomerics
Physical Properties Metric English Comments
Specific Gravity 1.30 - 1.80 g/cc
1.30 - 1.80 g/cc
ASTM D792
Mechanical Properties Metric English Comments
Hardness, Shore A 55 - 75
55 - 75
ASTM D2240
Tensile Strength >= 1.38 MPa
>= 200 psi
ASTM D412
Elongation at Break >= 100 %
>= 100 %
ASTM D412
Tear Strength >= 6.14 kN/m
>= 35.0 pli
ASTM D624
Descriptive Properties Value Comments
Binder Silicone
Color Light Blue
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