High Voltage Rubber Splicing Tape – Linered – 43L Series

30 mil EPR rubber would on a heavy duty woven poly liner

Primary electric insulation for low and high voltage applications through 69 kV

Rated for up to 194° continuous operating temperature


Our 43L Series Rubber Splicing Tape is a linered, pressure sensitive adhesive with an elastomeric backing that is self-fusing when wrapped upon itself. The elastomer is an EPR rubber based electrical grade compound.


  • Self-fusing and highly conformable producing tight, moisture resistant insulation without loss of electrical properties when elongated.
  • Rated for up to 90°C continuous operating temperature and intermittent service at 130°C. Will not crack at –40°C.
  • Flame Retardant. Meets industry standards for flame retardancy as defined by IEEE std. 27-1974 ANSI.
  • Meets ASTM D4388 specifications.


  • Use as primary electric insulation for low and high voltage applications through 69 kV
  • Electrical splices
Item # Roll Size Units / Case Case Size Case Weight
435007-0048 3/4″ (19 mm) x 30 ft 48 – Cello / Label n/a n/a
435007 3/4″ (19 mm) x 30 ft 48 – Cello n/a n/a
435010 1″ (25 mm) x 30 ft 36 – Cello n/a n/a
435015 1.5″ (38 mm) x 30 ft 24 – Cello n/a n/a
435020 2″ (50 mm) x 22 ft 16 – Cello n/a n/a

Technical & Consumer Data

Physical Properties

Color (visual): Black
Thickness: 30 mils
Tensile Strength: 300 psi
Ultimate Elongation: 875%
Operating Temperature: 90°C
Emergency Overload: 140°C
Thermal Conductivity: 0.177 W/moK
Ozone Resistance: Pass
Heat Resistance: Pass
UV Resistance: Pass
Dielectric Strength –Original: 825 volts / mil
24 hrs in H2O: 720 volts / mil
96 hrs @ 23°C 96% humidity: 800 volts / mil
Volume Resistivity –Original: >1018 ohm-cm
Aged 96 hrs @ 23C 96% RH: >1017 ohm-cm
Dielectric Constant: 1200 volts @ 60 Hz
-23°C: 3.7
-90°C: 3.6

NOTICE: The physical and performance characteristics shown are averages obtained from tests made by ASTM, government agencies or our own procedures. This product meets ASTM-D-4388 test standards. A particular roll may vary slightly from these averages and it is recommended that the purchaser determine the suitability for his own purpose.


Technical Data Sheet

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