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A sealing system for a vibratory screening machine is described. The machines may be used for either separating dry particles of different sizes or separating solids from a liquid. The seal is to overcome problems of screen wear and noise plus leakage of product. The frames of the screens are fitted with a bevelled edge that mates with a channel in the machine.
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This invention relates to the sealing of air conditioners particularly to inhibit water penetration between different sections of the unit. A problem exists that hard-wiring is routed through spaces that provide paths for water to move between the components and a sealant is often used. This patent
## Saint-Gobain Performance Plastics Corp. USA 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 c
torr to 10-z torr. Experiments confirm