Products

For aerospace fluid handling systems operating at extreme temperatures and pressures, material selection directly impacts service life and maintenance intervals. The glass reinforced PTFE tubing high temperature product line from our manufacturing facility offers a proven balance of mechanical strength and low friction. As a leading 15% glass filled PTFE tube manufacturer, we extrude each length from virgin PTFE resin compounded with precisely 15% milled glass fiber. This formulation is specifically designed to resist creep under continuous load while retaining the chemical inertness aerospace engineers expect from a PTFE tube with 15% glass fiber filler. In aggressive environments such as jet fuel, hydraulic fluid, and Skydrol, the material delivers superior fiberglass PTFE tube chemical resistance compared to unfilled PTFE, reducing dimensional change and extending component life in bleed air, lubrication, and sensor line applications.

The 15% Glass Fiber PTFE Tube for Aerospace is supplied in continuous lengths with tight concentricity and smooth internal surfaces to minimize pressure drop. This product is engineered for use in cabin air distribution, fuel tank vent lines, and hydraulic return circuits where dimensional stability at elevated temperature is critical. The 15% glass fiber dispersion inhibits cold flow under clamp loads and improves wear resistance in dynamic seal applications without compromising the tube’s dielectric strength.

Available stock dimensions and tolerance classes

• Outer diameter range: 4 mm to 50 mm (0.157 in to 1.969 in)
• Wall thickness range: 0.5 mm to 5 mm (0.020 in to 0.197 in)
• Standard coil length: 10 m, 25 m, 50 m, or 100 m; cut lengths available on request
• Concentricity tolerance: ±0.05 mm for tubes up to 20 mm OD; ±0.10 mm for larger sizes
• Color: natural white to light tan, consistent with 15% glass fiber loading

Key mechanical and thermal parameters

Each production lot undergoes automated ultrasonic wall inspection and is visually checked for surface imperfections before spooling. The material is RoHS and REACH compliant, and traceability documentation includes raw resin certificates, extrusion parameters, and dimensional reports for aerospace quality audits.

Chemical compatibility profile for aerospace fluids

• JP-8 and Jet A-1: no measurable weight change after 168 h at 70°C
• Skydrol 500B-4: volume swell less than 1% after 24 h at 100°C
• MIL-PRF-5606 hydraulic fluid: no cracking or softening after 72 h at 93°C
• De-icing fluid (Type I and Type IV): no degradation after 30 cycles
• Nitrogen tetroxide and hydrazine: not recommended for continuous exposure; consult engineering for short-term vent service

The manufacturing process uses isostatic ram extrusion with a heated die to maintain uniform fiber orientation. This technique reduces surface porosity and ensures a leak-tight structure at pressures up to 3,500 psi for small-diameter tubes, depending on wall thickness and safety factor.

Typical installations include APU fuel feed lines, environmental control system drain tubes, and wire harness protection sleeves where abrasion resistance and low outgassing are required. The 15% glass fiber formulation reduces the coefficient of thermal expansion to approximately 70 × 10⁻⁶ m/m°C, which helps maintain seal integrity across rapid altitude changes.

Packaging and identification

• Each coil is sealed in polyethylene film and packed in a heavy-duty cardboard carton.
• Labels include part number, lot number, OD, wall thickness, length, cure date, and inspector stamp.
• Custom laser marking is available at intervals of 0.5 m, 1 m, or as specified.