Expanded PTFE Joint Sealant Tape | Peel-and-Stick Flange Gasket

Engineered from 100% virgin expanded PTFE, our ePTFE joint sealant tape provides a highly conformable, soft, and flexible gasket solution for complex or large-diameter flanged connections. The unique micro-porous expanded structure gives the tape exceptional compressibility, allowing it to easily fill surface scratches, pitting, and flange irregularities under light bolt torque.

Equipped with a convenient self-adhesive backing strip, this peel-and-stick gasket tape eliminates material waste and tedious die-cutting, enabling fast, on-site custom gasket creation for piping flanges, pressure vessels, and glass-lined equipment.

Key Performance Benefits

• Universal Chemical Compatibility: Resists virtually all chemical media across the entire pH range (0–14), including aggressive acids, strong alkalis, and organic solvents.

• Low Creep & Cold Flow: Multidirectional expanded fiber matrix drastically reduces creep relaxation and cold flow compared to traditional skived PTFE sheet gaskets.

• High Thermal & Pressure Resistance: Maintains reliable sealing integrity at temperatures from -240°C (-400°F) to +260°C (+500°F) and handles full vacuum up to high-pressure flange ratings.

• Self-Adhesive Easy Installation: Heavy-duty adhesive backing holds the tape securely in place on vertical or overhead flange faces during assembly.

• Zero Waste & Cost-Effective: Simply peel, press onto the flange surface, overlap the ends at a bolt hole, and torque down—no pre-cut inventory required.

Technical Specifications

• Material Composition: 100% Expanded Virgin PTFE (ePTFE)

• Adhesive Backing: Pressure-sensitive peel-and-stick adhesive strip

• Width Range: 3 mm to 50 mm (1/8" to 2")

• Thickness Range: 1.5 mm to 10 mm (1/16" to 3/8")

• Operating Temperature: -240°C to +260°C (-400°F to +500°F)

• pH Range: 0 – 14 (Inert to all chemicals except molten alkali metals and elemental fluorine)

• Compliance: FDA 21 CFR 177.1550 compliant for food and pharmaceutical contact

Primary Applications

• Chemical & Petrochemical Flanges: Pipe flanges, manhole covers, inspection ports, and heat exchanger shell joints.

• Glass-Lined & Plastic Flanges: Fragile or delicate flange surfaces requiring low bolt torque to achieve a leak-free seal.

• Large Diameter Equipment: Custom-shaped housings, reaction tanks, pump casings, and industrial ductwork joints.

• Pharmaceutical & Cleanroom Systems: Non-contaminating, pure fluid transfer lines and sanitary processing equipment.

Quality Control & Protective Packaging

• Thickness & Density Micrometer Checks: Precision micrometer measurement ensures consistent tape thickness, soft density, and uniform expansion across every spool.

• Adhesive Integrity Verification: Rigorous testing confirms strong adhesive tack and clean release liner peeling for effortless field installation.

• Organized Spool & Tray Packaging: Spools are individually wrapped, housed in multi-compartment protective trays, and boxed to prevent tape edge compression or dust contamination during transport.

Contact our sales team today to request custom tape widths, continuous spool lengths, or distributor wholesale quotes.