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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 energised plastic Urings, typically with a wiper type of lip, but all with two energiser springs. Both flanged seals, as often used for rotary applications, and non flanged seals are described. A range of detail variations in geometry are illustrated.
๐ SIMILAR VOLUMES
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 incl
This invention concerns an annular sealing joint.
Dresser-Rand Co, USA This system is designed to be an efficient, compact and cost-effective way and method of supplying clean, dry gas to gas seal buffer supply lines and does not require regular maintenance. The system uses a rotary separator, magnetically coupled to a source of rotational power, a
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.