Product Description
3M Brand PST Cold Shrink Connector Insulators are a series of open-ended, tubular rubber sleeves, which are factory expanded and assembled onto a removable core. They are supplied for field installation in this pre-stretched condition. The core is removed after the tube has been positioned for installation over an inline connection, terminal lug, etc., allowing the tube to shrink and form a waterproof seal. The insulating tube is made of EPDM rubber, which contains no chlorides or sulphurs. Six diameter sizes will cover a range of 1000 volt cables, copper and aluminium conductors.

PST features are:
• Simple installation, requires only workman’s hands
• Accommodates a wide range of cable sizes
• No torches or heat required
• Good thermal stability
• Seals tight, retains its resiliency and pressure even after prolonged years of ageing and exposure
• Excellent wet electrical properties
• Improved tough rubber formulation to withstand rough backfilling
• Waterproof. Meets water seal requirements of NEMA Pub. No. PP-C1
• Resists fungus
• Resists acids and alkalis
• Resists ozone and ultraviolet light

Applications
• Primary electrical insulation for all solid dielectric (rubber and plastic) insulated wire and cable splices rated to 1000 volts
• Suitable for direct burial or submersion
• For indoor, outdoor, or overhead use
• Physical protection and moisture sealing for high-voltage, air-insulated connectors and lugs such as spacer cable and lug connections to bus bar
• Insulation of secondary splices copper or aluminium conductors
• Relocation of service
• Dig-in repairs
• Sheath repairs
• Insulation of inline conductor transition connectors (see Figure 1)