Overview
The Plymouth Bishop W963 Plysafe EPR high voltage tape is a 30 mil (0.76 mm) ethylene propylene rubber (EPR) tape engineered for professional electrical insulation and splicing work. This self-amalgamating tape is rated for applications through 69 kV and combines rapid self-fusion with superior electrical stability, making it the preferred choice for utility technicians, electrical contractors, and maintenance professionals working with medium and high-voltage power systems.
Key Features
- Self-amalgamating construction — fuses to itself without overlapping gaps, creating a void-free, electrically stable insulation layer
- 69 kV voltage rating — suitable for insulating and jacketing splices on power cables in high-voltage applications
- EPR insulation material — superior resistance to corona, ozone, and environmental stress cracking
- Waterproof and weatherproof — ideal for underground and outdoor cable protection
- Industry certifications — meets ASTM-D-4388, HH-I-553C/Grade A, and MIL-I-3825B standards
- Convenient 30-foot roll — reduces waste and storage needs on job sites
Technical Specifications
- Thickness: 30 mil (0.76 mm)
- Width: 3/4 inch (19 mm)
- Length: 30 feet per roll
- Material: EPR (ethylene propylene rubber)
- Voltage Rating: 69 kV maximum
- Core Diameter: 1.5 inches
- Tape Type: Self-amalgamating, insulating
- Standards Compliance: ASTM-D-4388, HH-I-553C/Grade A, MIL-I-3825B
- Key Property: Corona and ozone resistant
- Part Number: W963 (SKU 2117)
Typical Applications
The Plymouth Bishop W963 is engineered for high-voltage electrical work including:
- Insulating and jacketing splices on power cables rated 600V through 69 kV
- Waterproofing cable terminations and splice joints in underground and outdoor installations
- Stress cone and jacket repair on medium- and high-voltage splices
- Utility and industrial cable protection in harsh weather conditions
- Service entrance cable repair and reinforcement
- Electrical maintenance and emergency cable restoration
Compatibility & Replacements
Compatible With
- Standard utility and industrial power cable systems (600V–69 kV)
- EPR and polyethylene cable jackets
- Underground and submarine cable applications
- All standard cable repair and splicing kits
Replaces / Drop-In Replacement For
The Plymouth W963 is a primary high-voltage splicing tape with no direct drop-in replacement; verify compatibility with your cable manufacturer’s specifications before substituting with other EPR tapes or lower-voltage alternatives.
Works With
- Compatible with all Plymouth Bishop insulating tape systems and splicing kits
- Works with standard electrical tools (tape gun, hand application)
- Complements Raychem, 3M, and similar utility-grade splicing components
- Meets utility company and NESC (National Electrical Safety Code) standards for cable repair



