B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
277/5, 117/54
B05D 1/06 (2006.01) B05D 7/14 (2006.01) F16L 58/00 (2006.01)
Patent
CA 1120339
ABSTRACT OF THE DISCLOSURE An electrically insulating gasket for use in insulating pipe line sections comprises a mild steel O-ring having an ethylene chlorotrifluoroethylene copolymer coating which is applied by a special method to ensure intimate contact between the coating and the whole of the metal surface, with the coating being keyed into microscopic irregularities of the surface. The method involves thorough cleaning of the steel O-ring to expose white metal, etching the ring, cleaning the etchant solution from the ring, heating the O-ring to a temperature from 525°F to 545°F, and electrostatically applying successive layers of the copolymer coating composition to provide a coating thickness of at least 10 mil.
315966
Adam Dalbert
Paterson Ken
Stephenson Robert
Adam Dalbert
Gowling Lafleur Henderson Llp
Paterson Ken
Stephenson Robert
LandOfFree
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