WT800 - Rubber Mastic Tape

-20~+90 Uvproof Rainproof


Composed of elastic insulating material and waterproof sealant, and has lower cost and economic benefit compared to WT200. It is suitable for sealing and waterproofing the joints of power cable and communication cable, as well as the insulation and corrosion protection of high and low voltage busbar contacts.

Operating Temperature Range

  • Continuous operating temperature: -20℃ ~ 90℃
  • Emergency overload temperature: 130℃


Standard color: black


  • Flexible material, easy construction
  • Anti-ultraviolet
  • Abrasion, acid, and alkali resistant
  • Waterproof

Technical Data

Property Test Method Typical Value
Tensile strength ASTM D412 ≥2Mpa
Elongation at break ASTM D412 ≥1000%
Dielectric strength ASTM D4325 ≥20kV/mm
Volume resistivity ASTM D991 ≥1014 Ω‧cm


Part Number Size
Thickness (mm) Width (mm) Standard Length (Meter)
WT800 1.65±0.5 50 3

Other sizes can be customized on requested

Operating instruction:
Stretch the tape with proper strength by 1/2 overlap winding, tear the quarantine paper at the same time when winding, press hard on the end of the tape to let the tape is adhered to the cable sheath.

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