TE Connectivity
Low-fluoride wire and cable insulation system

Insulation Systems Protect Wire and Cables in Space

Jan. 14, 2020
A low-fluoride wire and cable insulation system with minimal outgassing has been developed for space and high-altitude applications.

The SPEC 55 low-fluoride (LF) wire and cable insulation systems have been developed by TE Connectivity for use in high-altitude and space requirements. The insulation systems are made from fluoropolymer with an outgassing rate of 10 ppm to minimize the potential for corrosion due to trapped gases escaping in a vacuum or low-pressure operating environment. The insulation greatly exceeds the 20-ppm outgassing level specified under MIL-SPEC SAE-AS22759, along with five times the scrape abrasion requirement under that standard.

The wire and cable insulation system are available in single- and dual-wall versions. “Mitigating corrosion potential by reducing outgassing is critically important to our customers designing for space, launch, and missile applications,” said Patrick Murphy, product manager for TE’s Aerospace, Defense and Marine division. “TE is pleased to be the only supplier of a dual-wall MIL SPEC-qualified option and one of only two suppliers of the single-wall option.”

The SPEC 55 LF insulation system is designed for avionic systems, C4ISR, guidance and seeker systems, and general wire harnessing systems, among other applications. The SPEC 55 LF insulation system is qualified to MIL-SPEC SAE-AS22759. The single-wall SPEC 55 LF system is qualified to SAE-AS22759/51 and SAE-AS22759/52 while the dual-wall system is qualified to SAE-AS22759/53 and SAE-AS22759/54 requirements.

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