ePTFE seal tape for hydraulic joint

When hydraulic connections operate under high pressure and cyclic loading, the thread interface becomes a critical leak path. Our ePTFE seal tape for hydraulic joint is manufactured from 100% expanded PTFE to create a conformable, chemically resistant seal for tapered and parallel threads in hydraulic cylinders, pumps, valves, and manifolds. Unlike general-purpose ePTFE joint sealant tape for industrial pipe, this product is densified for higher torque retention and lower cold flow under sustained load. It also outperforms standard expanded PTFE thread sealant tape in systems where thread clearance and vibration demand a more robust, form-fitted barrier. As an experienced PTFE joint sealant tape supplier, we deliver consistent roll geometry for manual and automated wrapping lines. For high-pressure hydraulic assemblies, many engineers specify our high density ePTFE sealant tape because it fills thread roots with fewer wraps and resists extrusion at elevated pressures.

ePTFE seal tape for hydraulic joint is offered in a series of thicknesses, widths, and densities to match common fitting standards such as JIC, BSP, NPT, SAE straight thread, and metric DIN connectors. Each roll uses virgin PTFE resin without fillers, lubricants, or binders, so the material remains compatible with mineral oils, phosphate esters, water-glycol fluids, and many aggressive chemicals. The tape does not harden, shrink, or become brittle after long-term exposure to hydraulic fluid at rated temperatures. Key specification ranges are shown below.

Material and performance parameters:

• Composition: 100% virgin expanded PTFE (ePTFE)
• Density: 0.8–1.2 g/cm³ depending on grade
• Thickness: 0.1 mm, 0.2 mm, 0.25 mm, 0.35 mm, 0.5 mm
• Width: 3 mm, 6 mm, 12 mm, 18 mm, 25 mm
• Roll length: 5 m, 10 m, 15 m, 25 m, 50 m
• Continuous service temperature: -240°C to +260°C
• Maximum working pressure: up to 10,000 psi (69 MPa) with correct thread engagement
• Chemical resistance: pH 0–14, including hydraulic oils, fuels, solvents, caustics, and acids
• Tensile strength: 8–15 MPa depending on density
• Elongation at break: 30%–80%
• Color options: white, gray, black for grade identification

Standard product matrix for hydraulic joint sealing:

For installation, wrap ePTFE seal tape for hydraulic joint in the direction of thread rotation with light, constant tension. The tape shears during assembly to create a void-free seal at the thread roots, while its non-hardening nature allows clean disassembly without thread damage. It is suitable for use in hydraulic systems, pneumatic controls, and chemical injection lines where leak-free performance is required.