M27500 WP and WR Cables 600V PTFE/polyimide/PTFE Tape Wrapped Multi-Core Signal

The M27500 WP and WR series are shielded and jacketed, multi-core signal cable engineered for high-temperature aerospace, defense, and industrial applications, meeting the rigorous requirements of MIL-DTL-22759/91 (WP) and MIL-DTL-22759/92 (WR) standards. These cables feature a lightweight composite insulation of PTFE/polyimide/PTFE tape, which provides exceptional thermal stability and mechanical strength, while the outer jacket—composed of FEP/polyimide tape covered by a PTFE tape outer layer—ensures resistance to abrasion, chemicals, and extreme environmental conditions.

With a voltage rating of 600V and temperature ratings ranging from -55°C to 200°C (WP) or 260°C (WR), these M27500 cables are ideal for critical signal transmission in jet engines, avionics systems, and high-heat industrial equipment. The WP type uses silver-plated copper conductors for optimal conductivity, while the WR type features nickel-plated copper conductors for enhanced high-temperature performance. Both types include a nickel- or silver-plated copper braid shield (85% coverage) to protect against electromagnetic interference (EMI), ensuring reliable signal integrity in the most demanding environments.

• Extreme Temperature Resistance - Type WP (-55°C ~ 200°C), Type WR (-55°C ~ 260°C), making it ideal for the hottest zones near exhaust systems and engines.
• Lightweight Composite Construction - Utilizes a PTFE/Polyimide/PTFE tape insulation system. This "Seamless Wrap" technology drastically reduces weight compared to standard extruded insulation, a critical factor for fuel efficiency in aerospace applications.
• Superior Shielding - Equipped with a Nickel-plated copper braid shield (85% coverage) that provides excellent protection against EMI/RFI interference, ensuring clean signal transmission.
• Robust Jacketing - The outer jacket consists of an inner layer of FEP/Polyimide tape and an outer layer of PTFE tape, offering high tensile strength and resistance to hydraulic fluids, fuels, and solvents.
• High Voltage Rating - Rated for 600V, suitable for a wide range of power and signal applications within aircraft and mili-tary vehicles.
• Customization Available - We offer full customization services, including core counts, specific cut lengths, color coding variations, and custom jacket printing to meet your exact assembly requirements.

• Aerospace Propulsion & Engine Zones
  Ideal for wiring jet engines, turbine sensors, and high-heat exhaust monitoring systems. The Type WR (Nickel-plated) is specifically designed to withstand continuous temperatures up to 260°C in these extreme zones.
• Avionics & Flight Control Systems
  Ensures reliable signal transmission for flight computers, navigation units, and fly-by-wire controls, offering lightweight construction without sacrificing durability.
• Airframe Wiring & Power Distribution
  Used for main power distribution buses and lighting circuits where weight reduction is essential. The composite insulation allows for a smaller bend radius and reduced cable weight compared to standard alternatives.
• Radar, RF & High-Frequency Data Transmission
  The high-quality nickel/silver-plated copper braid shield (85% coverage) provides excellent protection against EMI/RFI, making it suitable for Radar systems, RF communications, and high-frequency data transfer.
• Defense Electronics & Mili-tary Systems
  Ruggedized cabling solution for missile guidance, ground support equipment, and sensitive mili-tary electronics requiring resistance to chemicals, abrasion, and harsh environments.
• Precision Instrumentation & Differential Signaling
  Perfect for differential signal transmission and sensitive sensor wiring where consistent impedance and low signal loss are critical for system accuracy.

• Q: What is the main difference between type WP and type WR M27500 cable?
  A: The primary difference is the conductor plating and temperature rating. Type WP uses silver-plated copper and is rated up to 200°C. Type WR uses nickel-plated copper, allowing it to withstand higher temperatures up to 260°C.
• Q: What does the "seamless wrap" insulation mean?
  A: It refers to the composite insulation structure made of PTFE/Polyimide/PTFE tape wrapped around the conductor. This method creates a thin, lightweight, and tough insulation layer that is lighter than standard extruded PTFE.
• Q: What is the maximum voltage rating for these M27500 WP and WR cables?
  A: Both WP and WR series cables are rated for 600V, making them suitable for both power and signal applications.
• Q: Why choose M27500 WP and WR cables for aerospace applications?
  A: They offer a critical combination of lightweight construction (saving fuel), high-temperature resistance (surviving engine heat), and durability against aviation fluids, all while meeting strict mili-tary specifications.
• Q: Can these M27500 WP and WR cables be customized?
  A: Yes. We offer customization options including core counts, specific cut-to-length services, custom color coding for easy identification during installation, and specific shielding requirements.
• Q: What type of shielding is used?
  A: These M27500 WP and WR cables utilize a nickel- or silver-plated copper braid shield with approximately 85% coverage, providing robust protection against electromagnetic interference (EMI).
• Q: Are these multi-core signal cables resistant to chemicals?
  A: Yes, the outer jacket (FEP/Polyimide/PTFE) provides excellent resistance to common aerospace fluids, including hydraulic fluids, jet fuels, oils, and solvents.