Jedtco Corporation B031121240 12" x 12" Black Silicone Rubber Sheet 1/32" thick - 40 durometer MIL-R-5847 Class 1 & 2, ZZ-R-765 Class 1A 1B 2A 2B, A-A-59588 Class 1 & 2, A-A-55759 Class 1 & 2, AMS 3301, AMS 3302, AMS 3303, AMS 3304, AMS 3305