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The 3M 7100115544 is a PTFE extruded film tape in the 3M 5491 series, offered in gray and sized at 10 inches wide by 36 yards long. It features a silicone adhesive backing bonded to a PTFE extruded film carrier. The PTFE construction delivers an exceptionally slick, low-friction surface on application and provides strong chemical resistance. Compared to the thinner 5490 tape, the 5491 uses a thicker PTFE film for added durability in demanding sealing and masking applications. The tape resists curling during unwind, which supports clean, consistent lay-down. HVAC technicians, plumbers, and industrial service professionals commonly install this tape.
This tape is suited for applications requiring a chemically resistant barrier or a low-friction surface. Common use cases include sealing, masking, and lining in environments where exposure to aggressive chemicals, high temperatures, or mechanical abrasion is expected. It performs in both light commercial and industrial settings. The silicone adhesive holds well across a broad service temperature range, making it appropriate for HVAC duct sealing, pipe wrap, and machinery slide surfaces where a slick interface is required.
Designed as an OEM-style replacement or direct-use PTFE film tape for sealing, masking, and low-friction surface applications in HVAC, plumbing, and industrial service environments.
Apply to clean, dry surfaces free of oils, dust, and loose material before taping. Power down or shut off any associated equipment before applying tape near electrical components or pressurized systems. Trim with a sharp utility knife or dedicated tape cutter to maintain clean edges. Follow applicable codes and manufacturer guidelines when using tape as a component in sealed or pressurized assemblies.
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