C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/536, 319/8
C08F 114/26 (2006.01) C09K 3/10 (2006.01) H01M 2/08 (2006.01) H01M 8/02 (2006.01) H01M 8/24 (2006.01)
Patent
CA 1215197
High Temperature, High Pressure Chemical Resistant Seal Material Abstract A seal material especially adapted for phosphoric acid fuel cell stack sealing is described comprising an unfilled, unoiled high molecular weight polytetrafluoro- ethylene. Although the seal material is especially adapted as the regular seal around the plenums separating the oxygen and hydrogen gas inlets and outlets, it can also be used as a plenum or stack crack sealer, The material provides seal integrity and stability at tempera- tures in excess of 400°F (204°C), e.g. 400°F to 450°F (204°C to 232°C), in a corrosive chemical environment at differential pressures above 50 psi (e.g. 50 psi to 80 psi). It can be used in electrochemical cells in general where high temperature, high pressure, corrosive environments prevail.
396499
Martin Ronald G.
Powers Joseph
Trocciola John C.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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