3M 363 Glass Cloth Foil Tape Silver 2 in x 5 yd

Industrial-Grade Foil Tape for High-Temperature

3M 363 glass cloth foil tape is engineered for demanding thermal sealing tasks in automotive, aviation and industrial maintenance environments. The aluminum foil laminated to glass cloth withstands continuous exposure from -65 to 600 degrees Fahrenheit. It suits technicians who need reliable flame-resistant closure on ductwork, insulation jackets or heat shields.

Simple Pressure-Sensitive Application

The continuous roll format allows straight-off-the-spool application with hand pressure; no heat gun or special tools are required. Because the adhesive is aggressive, repositioning is difficult once the tape contacts the surface, so alignment must be correct on the first pass. Surface contamination such as oil, dust or moisture is the primary cause of bond failure.

Verify Substrate Compatibility and Temperature Needs

Confirm that the operating temperature of your system stays within the -65 to 600 degrees Fahrenheit range. The tape is designed for indoor and outdoor use but adhesion performance on low-surface-energy plastics or powder-coated metals should be tested first. Buyers needing wider coverage or longer continuous lengths should consider alternative roll dimensions.