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The Elastomerics Blog by Stockwell Elastomerics

Friday, January 08, 2010

Conductive Pad, ESD Pad, Conductive Adhesive – Cryogenic Exposure

SE65 is a carbon filled electrically conductive silicone rubber with a durometer of 65 on the Shore “A” scale. SE65 is typically used to dissipate or more specifically ground out static while providing some compliance and cushion. SE65 can be bonded to a conductive surface (aluminum or steel) using Stockwell’s RTV-60-CON which is also a carbon filled silicone based RTV (Room Temperature Vulcanizing). Bonding SE65 with RTV-CON makes a very intimate and strong bond when the surfaces are prepared properly.

Silicone has a general operating temperature ranging from -100 to 500°F (some grades vary). The SE65 has a conservative rating of -65 to 400°F. As a very crude test to see if there would be any deterioration of the SE65, RTV-60-CON or the bond between surfaces, a test piece bonded to aluminum was run thru Stockwell’s cryogenic deflasher, removed and hit with a hammer. The attached video clip shows the machine in idle mode set to -80°F (run mode). The sample was tumbled at -80°F for 60 seconds, removed and hit. There was no indication of bond or material degradation. This was a very crude test but does offer some insight to how well the bond holds up.

Stockwell Elastomerics carries a comprehensive line of ESD and EMI conductive silicone sheets, roll goods and molding compounds. For more information about these products, please call 215-335-3005 or email at

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posted by Steve Hughes at 2:19 PM


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