Refrigerant-impermeable hose

Details Refrigerant-impermeable hose Refrigerant-impermeable hose

1990-06-08

1992-05-12

Seidleck, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 362, 428 3691, 138126, 138153, F16L 1104

Patent

active

051126605

ABSTRACT:
Hoses are disclosed for transporting refrigerant media and a 1,1,1,2-tetrafluoroethane gas in particular. An inner tube is formed of a rubber composition comprising a selected ethylene-propylene-diene rubber and having a specified permeation limit of the gas. Disposed around the inner tube are a reinforcing layer and then an outer cover. The resulting hose is highly impermeable to gas and to water, sufficiently resistant to heat and fully free from maintenance.

REFERENCES:
patent: 3682202 (1972-08-01), Buhrmann
patent: 4111237 (1978-09-01), Mutzner
patent: 4431031 (1984-02-01), Ettlinger
patent: 4633912 (1987-01-01), Pilkington
patent: 4734305 (1988-03-01), Sujimoto

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