Chemical-Resistant Wire Types

A Comparative Analysis of High-Heat, Chemical-Resistant Wire Types: TXL, M22759/16, and M22759/32


High-heat and chemical-resistant wires are crucial components in various industries, particularly in automotive applications. Among the notable wire types in this category are TXL, M22759/16, and M22759/32. These wires exhibit superior performance in extreme environments, making them essential for demanding applications. This article aims to provide a comprehensive comparative analysis of these wire types, focusing on their construction, standards, and applications.

Wire Construction and Characteristics

The primary differences among TXL, M22759/16, and M22759/32 wires are rooted in conduit thickness and the chemical composition of the insulation. TXL, being the thickest of the three, boasts bare copper strands, while both M22759/16 and M22759/32 feature tin-plated copper strands. This distinction influences their performance in high-temperature and chemically aggressive environments. Additionally, M22759/32 stands out as the lightest and most compact option, with an outer diameter 15% smaller than that of M22759/16.

Standards and Ratings

Each wire type adheres to specific industry standards and ratings, further defining their suitability for diverse applications. TXL is compliant with standards such as SAE J-1128, Ford (M1L-123A), and Chrysler (MS-8288), making it a popular choice for automotive use. In contrast, M22759/16 and M22759/32 are rated to SAE AS22759, designed for extreme environment aerospace applications, as well as for use in severe weather and moisture-prone (SWAMP) areas. These standards underscore the robustness and reliability of these wires in challenging conditions.


Temp rating: -51C to +125C
Voltage rating: 50V
Insulation: XLPE (Crosslinked Polyethylene)
Conductor Stranding: 7/28
Example insulation for size 20 AWG: MAX O.D. 0.070”
Example weight for size 20 AWG: 5 LBS/MFT (0.005LB/FT)


Temp rating: -55C to +150C
Voltage rating: 600V
Insulation: ETFE (Etyhlene-Tetrafluorehtylene)
Conductor Stranding: 19/32
Example insulation for size 20 AWG: MAX O.D. 0.062”
Example weight for size 20 AWG: 4.3 LBS/MFT (0.0043LB/FT)


Temp rating: -55C to +150C
Voltage rating: 600V
Insulation: XL-ETFE (Crosslinked Etyhlene-Tetrafluorenhtylene)
Conductor Stranding: 19/32
Example insulation for size 20 AWG: MAX O.D. 0.052”
Example weight for size 20 AWG: 4 LBS/MFT (0.004 LB/FT)

Applications and Comparative Analysis

The selection of the appropriate wire type is contingent upon the specific requirements of the application. In automotive contexts, TXL serves as an entry-level wire, offering cost-effective solutions for essential automotive applications. M22759/16 represents a mid-range option, providing a balance between performance and affordability, making it suitable for a wide range of applications. Meanwhile, M22759/32 stands as the top-tier choice, excelling in weight reduction and compactness, making it ideal for applications where minimizing weight and space is paramount.


In conclusion, the selection of wire types TXL, M22759/16, and M22759/32 depends on the level of investment and specific project goals. While TXL offers a robust yet cost-efficient solution, M22759/16 strikes a balance between performance and cost, and M22759/32 excels in weight reduction and compactness. Understanding the distinct characteristics and applications of these wire types is essential for making informed decisions in various industrial and automotive settings.

Related Posts
Precision MPP Tracking System

What Makes a Good Circuit Board Versus a “Bad“ One?

Circuit boards, also known as printed circuit boards (PCBs), are the backbone of modern electronic devices. From smartphones to satellites, these components are crucial in connecting and supporting various electronic