3M Glass Cloth Tape 361 White 1 in x 60 yd 7.5 mil 36 per case

Industrial high-temperature sealing tape

3M Glass Cloth Tape 361 is a white silicone-adhesive tape built on a fibreglass cloth backing for aerospace, automotive, marine and military maintenance. It handles continuous indoor and outdoor exposure where standard tapes fail. Supplied as a continuous 60-yard roll in a 36-roll case.

Sustained heat and chemical exposure performance

The silicone adhesive delivers 38 oz/in adhesion to steel while resisting degradation at elevated temperatures over long shifts. Fibreglass cloth backing maintains dimensional stability and does not become brittle during extended thermal cycling. Clean-removal time is not rated, so the tape is intended for permanent or long-term sealing rather than temporary masking.

Installation notes and common issues

Apply to clean, dry surfaces at room temperature for maximum bond development; the 6.4 mil thickness requires firm pressure to wet out the cloth weave fully. Users sometimes expect clean removal because the adhesive is silicone, but the product carries no clean-removal rating and may leave residue on painted or polished substrates. Store rolls flat to prevent edge curl on the 1-inch width.