An air valve and a rubber seal enable the casket to be vacuumized.
Double lip rubber seal (8, 9) is provided with a metal stiffener (13) press fitted on the outer diameter of bottom washer (14).
A single use self-disabling syringe is disclosed, which includes a barrel (1), a plunger (2), and a rubber seal (3).
Each check valve (60,62) utilizes a nylon insert (114,114a) along with an over molded rubber seal (116,116a).
A cover member (30) covers the embedding hole (25) through an annular rubber seal (40) supportedly fitted into a groove formed therein and fixes the thermostat (50).
The rubber gasket loop (2) is disposed between the rotary joint (1) and the end plate (3), and the rubber gasket loop (2) provides a good sealing effect.
The cover is connected to the body by the coak and between them the rubber gasket is foreseen.
Watertight bolt with expanded head under which rubber packing can be inserted will prevent such water leakage.
However, the downwards insertion of the wedge-shaped element can give rise to damage to the sealing strip.
The reaction vessel (bell jar) (1) used in producing polycrystalline silicon is placed on a receiving plate (2) with a rubber gasket (3) therebetween.
If metal, the shell edge (34a, 36a) can carry a rubber gasket for sealing between the shell (12) and the lid (10), the cover (32) concealing the gasket.
It is constructed from prefabricated sections with the tongue and groove ends designed to fit together which, when used in conjunction with a rubber gasket, will produce a water tight seal.
The dual-mirror separating plate (3) is provided with a through hole (31) for the lamp tube (1) to pass through, and the through hole (31) is provided with a rubber gasket (32).