3M PTFE Extruded Film Tape 5490 Gray, features a silicone adhesive with a smooth layflat backing. Provides an exceptionally smooth, low friction surface that resists curling during unwind. PTFE tape offers a chemically resistant surface that is ideal for sealing and masking applications. Provides an easy release surface on rollers, plates, belts, etc. where build-up of sticky materials and inks can occur. Resistant to most solvents and salts. Excellent high temperature performance.