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A hydrogenated nitrile material for lip seal applications is described. It has a bound acrylonitrile of 40-48 wt% and an iodine value greater than 10%. The carbon black has a particle diameter of 60-100 nm and a white carbon with a specific surface area of 55 m 2 /g or less is used. The mixture includes 15-25 pphr of black and 45-55 pphr of the white carbon. The benefits claimed include; good compression permanent set and fluorocarbon foaming resistance, excellent gas shielding properties and wear resistance.
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This invention concerns an annular sealing joint.
This patent describes a pump for liquid chromatography applications. It is specifically designed to operate without lubricants that could cause contamination of the samples. The seals described are designed to run without lubricant and prevent cross contamination of samples. They are spring energise
properties and processability compared with typical gaskets that are used in layer-built fuel cells. The gasket is made of liquid rubber. Liquid perfluoro rubber and liquid silicone rubber is preferably used for its construction. The gasket can be made using an injection moulding process.