Aegis® H55WCX resin is a medium-viscosity, heat stabilized, nylon 6 universal wire jacket compound that provides excellent performance across a range of THHN, THWN and TFFN constructions. It offers well-balanced features including flexibility, toughness, abrasion resistance, and superior resistance to gasoline, oil and other hydrocarbons.

Polymer Name: Polyamide 6 (PA 6)

Additives Included: Heat Stabilizer, Plasticizer (Unspecified)

Flexural Modulus: 2006.37 - 2006.37 MPa

Technical Data Sheet

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Identification & Functionality

Chemical Family
Polymer Name
Plastics & Elastomers Functions

Features & Benefits

Product Highlights

Aegis® nylon jacket compounds are designed to provide protection from physical and chemical damage during installation and throughout the service life of a wire. When a nylon jacket is used to protect insulation, the thickness of the insulation can be reduced. The resulting smaller outside diameter allows for installation of more wires in a given size conduit.

Aegis® nylon jacket compounds are formulated to offer excellent processability, making them suitable for use on any manufacturing line. As part of a wire or cable construction, Aegis® nylon jacket compounds help enable wire and cable producers to attain UL certifications and markings for their products.


  • Excellent protection from grease, oil and gasoline
  • Abrasion, cut and impact resistance
  • Extra flexibility for cold and dry environments
  • UL QMTT2 Listed (building wire applications)

Applications & Uses

Processing Guidelines

Material Handling

Maximum Water Content: 0.12%
Aegis® H55WCX nylon compound is supplied in sealed containers and drying prior to processing is not required. However, high moisture is the primary cause of processing issues. If drying becomes necessary, a dehumidifying or desiccant dryer operating at 70°C (158°F) is recommended. Drying time is dependent on moisture level.

Melt Viscosity vs Temperature

Melting point, ASTM D-738: 220°C (428°F). The recommended melt temperature range is 240-275°C (464-527°F).

Typical Extrusion Temperature Profile

Barrel: 249-266°C (480-510°F)
Adapter: 260-266°C (500-510°F)
Die: 260-266°C (500-510°F)
Process Melt Temperature: 260-270°C (500-518°F)

Screw Parameters

Metering Section: 40%
Transition Section: 3 to 4 flights
Feed Section: Balance of screw length
Compression Ratio: 3.5:1 to 4.0:1
L/D Ratio: 24:1

Metering Section Flight Depth

Screw Diameter Recommended Depth
1" 0.055"
1.5" 0.060"
2" 0.070"
2.5" 0.080"
3.5" 0.100"
4.5" 0.115"
6" 0.135"

Aegis® nylon jacket compounds are UL QMTT2- and UL QMTM2-listed wiring components specifically designed for high-performance uses, including in:

  • Residential buildings
  • Commercial buildings
  • Plenum cables
  • Machine tools
  • Automobiles
  • Appliances


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density1.15g/cm3ASTM D-792
Rockwell Hardness116/80Scale RASTM D-785-08A
Dielectric Strength Short Time (at 3.2 mm)378/235V/milASTM D-149-09
Elongation Break (at 23°C (73°F))180/360%ASTM D-638-10
Elongation Yield (at 23°C (73°F))4.6/34%ASTM D-638-10
Flexural Modulus (at 121°C (250°F))42100/39,000psi
Flexural Modulus (at 23°C (73°F))291000/82,800psi
Flexural Modulus (at -40°C (-40°F))521000/601,000psi
Flexural Stress at 5% Strain (at 121°C (250°F))1900/1,680psiASTM D-790-10A
Flexural Stress at 5% Strain (at 23°C (73°F))10600/3,420psiASTM D-790-10A
Flexural Stress at 5% Strain (at -40°C (-40°F))22500/21,300psiASTM D-790-10A
Notched Izod Impact (at 23°C (73°F))0.9/23ft-lbs/inASTM D-256-10A
Notched Izod Impact (at -40°C (-40°F))0.8/0.7ft-lbs/inASTM D-256-10A
Tensile Strength Yield (at 23°C (73°F))9300/4,480psiASTM D-638-10
Volume Resistivity (at 3.2 mm) - Dry2.19E14/3.63E10Ω∙cmASTM D-257-07

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data


Aegis® nylon jacket compounds have been tested to meet ANSI/UL 1581 and ANSI/UL 83 standards, making them interchangeable with other nylon jacket compounds used for Type THHN, THWN and THWN-2 wire, SPT-1 cord, and Types TFN fixture wire and TFFN fixture wire.