Fiber composite sealing element

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

138 89, 138DIG2, 277DIG6, F16J 1556, F16J 1500, F16L 5511

Patent

active

050280562

ABSTRACT:
The composite sealing element of the invention includes an elastomeric sealing lip portion and a base portion, chemically bonded to the sealing lip comprised of an elastomer reinforced with discrete dispersed fibers oriented in a preferential manner, and the sealing lip and base portions being chemically bonded together such as by covulcanization to form an integral sealing element resistant to delamination. The method involved forming a fiber loaded sheet in which the fibers are oriented generally unidirectionally, plying up the sheet to form the base portion of the sealing element, and molding the finished article under heat and pressure.

REFERENCES:
patent: Re23317 (1951-01-01), Greenwald
patent: 2644978 (1953-07-01), Becker
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patent: 3077904 (1963-02-01), Rusche
patent: 3287920 (1966-11-01), Oitto, Jr.
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patent: 3675685 (1972-07-01), Potter
patent: 3691000 (1972-09-01), Kalnin
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patent: 3800486 (1974-04-01), Harvey
patent: 3879044 (1975-04-01), Estes
patent: 3901517 (1975-08-01), Heathcott
patent: 4214761 (1980-07-01), Pippert
patent: 4280709 (1981-07-01), Heikes, Jr. et al.
"Slush Pump Expendables-Performance and Economics", by J. R. (Bob) Arnett (of Reed American Products Co.) in 1981 Drilling Technology Conference Transactions.

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