Injectable packing formulation containing flexible graphite

Details Injectable packing formulation containing flexible graphite Injectable packing formulation containing flexible graphite

1978-02-01

1979-07-24

Gantz, Delbert E.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

252 13, 277DIG6, B65D 5300, E21B 3300, C10M 500, C10M 700

Patent

active

041620780

ABSTRACT:
An injectable packing formulation comprising particulate flexible graphite and a suitable liquid lubricant. Such formulation can be used to pack the stuffing box assembly of any pump, valve, expansion joint, or like structure, and is particularly useful at temperatures in excess of 500.degree. F. where other packing materials do not perform satisfactorily. While stuffing boxes filled with conventional injectable packing formulations require frequent re-packing in order to maintain a seal when operated at elevated temperatures, stuffing boxes packed with the packing formulation of the present invention require little or no maintenance even when operated at highly elevated temperatures.

REFERENCES:
patent: 3271308 (1966-09-01), Veit et al.
patent: 3404061 (1968-10-01), Shane et al.
patent: 4068853 (1978-01-01), Schnitzler
Bulletin TP2-175A, "Thermal Pak TP2 Expansion Joints", Advanced Thermal Systems, Aug. 1977, pp. 1-12.
"Steam Cycle Test Report (TPC-1)", Advanced Thermal Systems, 1977, pp. 1-3.

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