HS Butyl 2788 is an extruded butyl tape with a fixed PVC backing, designed for use in electrical applications. It is suitable for sealing cables, electrical connections, and junction boxes. This ready-to-use tape offers good electrical and mechanical properties, providing reliable performance in demanding environments.

Product Type: Tape

Application Area: Cables, Electrical Connection, Junction Boxes

Compatible Substrates & Surfaces: Plastics

Features: Ease Of Use, Good Adhesion, Good Electrical Properties, Good Mechanical Properties, Improves Physical Properties

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Features
  • Excellent adhesion to most rubber and plastic cable insulation materials.
  • Good physical and electrical properties.
  • PVC backing improves mechanical strength.
  • Easy and accurate to use with little waste and no mess.

Applications & Uses

Markets
Applications
Application Area
Compatible Substrates & Surfaces
Product Application
  • For sealing and protection of joints in electrical cables.
  • For sealing in and around junction boxes.
  • For low voltage cable repair.
  • For sealing all types of overhead electrical connections up to 1kV.
Application Instructions

Surface preparation

  • All surfaces should be clean, dry, and free from frost, grease, and loose materials.

  • When cleaning contaminated substrates, HS Butyl recommends using propan-2-ol (IPA) and allowing it to dry before applying the butyl tape.

Application

  • Apply directly from the reel, removing the backing paper in short lengths.

  • Keep the product taut or slightly stretched while wrapping to ensure a good seal.

Properties

Performance Properties
ValueUnitsTest Method / Conditions
180° Peel Adhesion14N/cmH41
90° Peel Adhesion9N/cmH48
Insulation Resistance14 × 10¹²OhmsBS 903
Electrical Strength22kV/mmBS 903
Breaking Strength28N/cmBS 903
Service Temperature Range-40 to +90°C-
Application Properties
ValueUnitsTest Method / Conditions
Application Temperature Range5 - 40°C-
Product Tolerance

Rectangular sections:

  • Thickness: ±10%

Width:

  • Up to 25mm: ±1mm
  • 26mm to 100mm: ±2mm

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Information

HS Butyl 2788 is supplied as a preformed strip with a siliconised release paper. A wide range of dimensions can be supplied. Product dimensions will determine the number of rolls per carton.

Storage & Handling

Shelf Life
24 months
Storage Condition

24 months when stored flat in original packaging in cool, dry conditions.