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of high-performance wire,
cable and tubing since 1959
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Local: (661) 257-2400
HAPT is a multi-purpose film insulation which has a modified polyester basecoat and a polyamideimide topcoat. This combination provides a film insulation which has physical toughness, excellent dielectric properties, and superior chemical resistance to common solvents and refrigerants. Thermal properties of over 200°C qualify it for severe thermal overload applications. Compared to nylon overcoated polyester, the properties most improved are physical moisture, chemical and thermal resistance. HAPT is an extremely moisture resistant film insulation coating, suitable for many uses including open motor, high moisture application and hermetic applications. Other outstanding properties include thermal life, thermoplastic flow, burnout and heat shock.

This product is the standard of excellence for motor repair, maximum result, and minimum reject applications. It is impressive because it couples the extra advantages of high moisture resistance with ease of insertion.

Typical Applications
  • Fractional and integral horsepower motors (hermetic and open)
  • Automotive and power tool motors
  • General purpose motors
  • Dry-type transformers
  • Large coil applications - unvarnished, varnished or encapsulated
  • Electronic Coils
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Item #

AWG Size

Nom. Bare Wire Diameter

Min. Increase in Diameter Due to Film Coating

Max. Overall Diameter of Film-Coated Wire

MWRD02HAPT N/A 2 N/A 0.2576 in6.543 mm N/A 0.0039 in0.099 mm N/A 0.2649 in6.728 mm
MWRD06HAPT N/A 6 N/A 0.1620 in4.115 mm N/A 0.0035 in0.089 mm N/A 0.1671 in4.244 mm
MWRD07HAPT N/A 7 N/A 0.1443 in3.665 mm N/A 0.0034 in0.086 mm N/A 0.1491 in3.787 mm
MWRD08HAPT N/A 8 N/A 0.1285 in3.264 mm N/A 0.0033 in0.084 mm N/A 0.1332 in3.383 mm
MWRD09HAPT N/A 9 N/A 0.1144 in2.906 mm N/A 0.0032 in0.081 mm N/A 0.1189 in3.020 mm
MWRD10HAPT N/A 10 N/A 0.1019 in2.588 mm N/A 0.0031 in0.079 mm N/A 0.1061 in2.695 mm
MWRD11HAPT N/A 11 N/A 0.0907 in2.304 mm N/A 0.0030 in0.076 mm N/A 0.0948 in2.408 mm
MWRD12HAPT N/A 12 N/A 0.0808 in2.052 mm N/A 0.0029 in0.074 mm N/A 0.0847 in2.151 mm
MWRD13HAPT N/A 13 N/A 0.0720 in1.829 mm N/A 0.0028 in0.071 mm N/A 0.0757 in1.923 mm
MWRD135HAPT N/A 13-1/2 N/A 0.0679 in1.725 mm N/A 0.0028 in0.071 mm N/A 0.0716 in1.819 mm
MWRD14HAPT N/A 14 N/A 0.0641 in1.628 mm N/A 0.0032 in0.081 mm N/A 0.0682 in1.732 mm
MWRD145HAPT N/A 14-1/2 N/A 0.0605 in1.537 mm N/A 0.0032 in0.081 mm N/A 0.0646 in1.641 mm
MWRD15HAPT N/A 15 N/A 0.0571 in1.450 mm N/A 0.0030 in0.076 mm N/A 0.0609 in1.547 mm
MWRD155HAPT N/A 15-1/2 N/A 0.0539 in1.369 mm N/A 0.0030 in0.076 mm N/A 0.0576 in1.463 mm
MWRD16HAPT N/A 16 N/A 0.0508 in1.290 mm N/A 0.0029 in0.074 mm N/A 0.0545 in1.384 mm
MWRD165HAPT N/A 16-1/2 N/A 0.0480 in1.219 mm N/A 0.0029 in0.074 mm N/A 0.0517 in1.313 mm
MWRD17HAPT N/A 17 N/A 0.0453 in1.151 mm N/A 0.0028 in0.071 mm N/A 0.0488 in1.240 mm
MWRD175HAPT N/A 17-1/2 N/A 0.0427 in1.085 mm N/A 0.0028 in0.071 mm N/A 0.0463 in1.171 mm
MWRD18HAPT N/A 18 N/A 0.0403 in1.024 mm N/A 0.0026 in0.066 mm N/A 0.0437 in1.110 mm
MWRD185HAPT N/A 18-1/2 N/A 0.0380 in0.965 mm N/A 0.0026 in0.066 mm N/A 0.0414 in1.052 mm
MWRD19HAPT N/A 19 N/A 0.0359 in0.912 mm N/A 0.0025 in0.064 mm N/A 0.0391 in0.993 mm
MWRD195HAPT N/A 19-1/2 N/A 0.0339 in0.861 mm N/A 0.0025 in0.064 mm N/A 0.0370 in0.940 mm
MWRD20HAPT N/A 20 N/A 0.0320 in0.813 mm N/A 0.0023 in0.058 mm N/A 0.0351 in0.892 mm
MWRD205HAPT N/A 20-1/2 N/A 0.0302 in0.767 mm N/A 0.0023 in0.058 mm N/A 0.0333 in0.846 mm
MWRD21HAPT N/A 21 N/A 0.0285 in0.724 mm N/A 0.0022 in0.056 mm N/A 0.0314 in0.798 mm
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