Inquiry (采购产品): Closed cell foam Do you have a closed cell foam capable of withstanding heat, 200 degree range, for long periods of time. Looking to block air in the commercial air conditioners we mfg. Also, is there a foam that expands when subjected to high heat...sort of a self sealing gasket? Thanks Steve Hast **** Hidden Message ***** Steve Hast Aberdine loop Lynn Haven, FL 32405 USA Company: TRANE Title: Engineer Phone: 873 8299 E-mail: steve.hast@trane.com **** Hidden Message ***** steve.hast@trane.com