Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1987-04-22
1989-10-10
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
165179, 277 22, 277 81R, F16J 1534, F16J 1554, F28F 142
Patent
active
048726893
ABSTRACT:
The present invention is particularly concerned with rotary end face seals of the type including a pair of annular sealing members disposed in relatively rotatable sealing proximity about a rotation axis. Each of these annular members typically includes a radially arranged annular sealing surface with these sealing surfaces being in face-to-face sealing proximity with one another during use so as to define a radially arranged annular sealing interface which separates a region of higher pressure from a region of lower fluid pressure. The invention particularly provides an annular heat exchanger which, in use, surrounds the annular sealing members in radially spaced relation thereto to define, within one of the above-noted regions, an annular zone of fluid pressure between the heat exchanger and the sealing members. The heat exchanger acts to transmit heat energy into or out of the above-noted annular zone thereby to affect the temperature of the fluid in such zone during use and hence affect the operating temperatures of the sealing members and the interface temperature to achieve greater sealing efficiency and/or longer seal life.
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Seven page presentation entitled "Advanstech Transtherm Cartridge Mechanical Seal" (undated).
Nuraseal Co. Ltd.
Shoap Allan N.
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