Heavy Wall Semi-Rigid Tubing, Uncoated, Rated to 1kV

The Innovative Power Products HWTU series tubing is a heavy wall, semirigid heatshrinkable tubing for general purpose use. It can be used to insulate and jacket cables rated to 1kV or to jacket wire bundles. It is an excellent choice for mechanical strain relief of cable assemblies and the corrosion and abrasion protection of many metal substrates.

HWTU tubing’s high expansion ratio provides a wide application range, so a minimum number of tubes cover a wide range of cables and application diameters.

HWTU tubing is very abrasion and chemical resistant and can be used to protect metal, plastic, wood or fiberglass surfaces.

Physical Properties
Test Method
Value (nom.)
ASTM D-1505
1.00 g/cm3
Tensile Strength
ASTM D-412
14 N/mm2
Ultimate Elongation
ASTM D-412
350 %
Water Absorbtion
ASTM D-570
Electrical Properties
Test Method
V ue (nom.)
Dielectric Constant
ASTM D-150
Electric Strength
8 kV/mm
Volume Resistivity
1x 1014 ohm-cm

  • To download a PDF copy of the data sheet Click here.

    For a complete PDF of the current IPP catalog Click Here. If you would like the catalog in a printed version, please go to the "Catalog Request" page via the link at the top of the page.

  • HWTU: Price List PL-320

    For direct buried applications or wherever a heavy wall thickness product with adhesive inner liner is necessary for harsher environments and a sealed connection, use IPP’s HWAT series tubing.

    For applications where a medium wall thickness product is required, use IPP’s MWTU series tubing.

  • Find the diameter required for the application. For example: To bundle a number of wires with an outside diameter of 1.00 inches: select HWTU 40/12

Heavy Wall
Catalog #
600 Volt Cable nom. AWG/kcmil Inside Diameter Standard Lenghts
As Supplied
After Recovery (d) Cut length is ± 2% as supplied
MWTU 12/3 #14 - #10 0.47(12mm) 0.118 (3mm) 48(1220mm) or 100 feet Spooled
HWTU 15/5 #10 - #6 0.60 (15mm) 0.196 (7mm) 48(1220mm) or 100 feet Spooled
HWTU 20/7 #6 - #2 0.78 (20mm) 0.276 (7mm) 48(1220mm) or 100 feet Spooled
HWTU 30/10 #2 - 4/0 1.18 (30mm) 0.393 (10mm) 48(1220mm) or 100 feet Spooled
HWTU 40/12 1/0 - 350 1.57 (40mm) 0.473 (12mm) 48(1220mm) or 50 feet Spooled
HWTU 51/16 350 - 500 2.05 (50mm) 0.620 (16mm) 48(1220mm) or 50 feet Spooled
HWTU 78/22 600 - 1500 3.05 (78mm) 0.870 (22mm) 48(1220mm) or 50 feet Spooled

QUESTIONS OR QUOTES EMAIL US AT: sales@ippcorp.com or CALL TOLL FREE 1-800-544-4626