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expanded PTFE tape for pipe thread

Expanded PTFE tape for pipe thread is a high-performance sealing material engineered for threaded joints in plumbing, chemical processing, and industrial piping systems. Made from 100% pure expanded polytetrafluoroethylene, this tape compresses into thread grooves to form a tight, leak-free seal without the curing time or messy cleanup of liquid sealants. It withstands aggressive chemicals, steam, and thermal cycling, making it a preferred choice for maintenance teams and OEM assemblies. When the sealing surface is a flat face rather than a tapered thread, our expanded PTFE tape for flange gasket provides the same conformability in wider widths for full-face coverage. For applications where continuous exposure to elevated temperatures risks degradation of standard PTFE, the ePTFE sealing tape high temperature grade maintains integrity at sustained operating temperatures up to 315°C (600°F). As an experienced PTFE expanded tape manufacturer, we control every stage from resin selection to final slitting, ensuring consistent density and thickness across rolls. The material’s inherent flexible ePTFE tape for seal behavior fills micro-roughness and resists cold flow under pressure, which is critical for leak prevention in vibration-prone systems. Installers simply wrap the tape clockwise over the male threads, tighten the joint, and achieve a full-pressure seal immediately. It works on metal and plastic threads, requires no primer, and allows disassembly without galling or residue buildup. This makes expanded PTFE tape for pipe thread both a cost-effective and maintenance-friendly solution across potable water, hydraulic, pneumatic, and corrosive chemical lines.


Expanded PTFE tape for pipe thread is available in a range of dimensions and performance grades to match specific joint types and service conditions. The standard product line includes the following key specifications:

  • Width options: 12 mm (1/2 in), 19 mm (3/4 in), 25 mm (1 in), and 50 mm (2 in) for flange or large-diameter threads
  • Thickness options: 0.05 mm, 0.075 mm, 0.1 mm, and 0.2 mm differential for fine vs. coarse threads
  • Density: 0.6 to 0.8 g/cm³ for standard, 0.8 to 1.0 g/cm³ for high-density ePTFE tape
  • Temperature range: -268°C to +315°C (-450°F to +600°F) continuous service; short-term exposure up to 343°C (650°F)
  • Pressure rating: 80 bar (1,160 psi) for liquid lines and 20 bar (290 psi) for gas lines, depending on joint make-up and thread engagement
  • Chemical resistance: pH 0 to 14 except molten alkali metals and elemental fluorine at elevated temperatures
  • Color: white, black, and gray for identification of different grades
  • Compliance: FDA 21 CFR 177.1550, UL 94 V-0, USP Class VI, NSF/ANSI 61 for potable water

The table below summarizes the standard product configurations for expanded PTFE tape for pipe thread:

ParameterStandard GradeHigh-Temperature GradeHigh-Density Grade
Thickness0.1 mm (0.004 in)0.075 mm (0.003 in)0.2 mm (0.008 in)
Width12 mm, 19 mm, 25 mm19 mm, 25 mm25 mm, 50 mm
Density0.6 g/cm³0.7 g/cm³0.9 g/cm³
Max continuous temp260°C (500°F)315°C (600°F)288°C (550°F)
Tensile strength (MD)10 MPa (1,450 psi)12 MPa (1,740 psi)14 MPa (2,030 psi)
Elongation at break50%40%30%
Roll length25 m (82 ft)25 m (82 ft)10 m (33 ft)

Each roll is slit to precision tolerances of ±0.5 mm for width and ±0.01 mm for thickness. The tape is wound on non-shedding plastic cores and packed in heat-sealed barrier bags to preserve cleanliness until installation. For critical applications, lot-level certificates of conformance and independent lab test reports are available upon request.

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