Cold shrink joints are pre-stretched elastomeric tubes, typically made from silicone or EPDM rubber, that recover to their original size when the supporting core is removed. This recovery provides a tight, uniform seal around the cable, ensuring electrical insulation, mechanical protection, and environmental resistance without the need for heat or adhesives . They are widely used for medium- and high-voltage cables, including inline splices and terminations up to 72.5 kV .
The end sleeve or rejacketing sleeve is an additional layer that covers the joint area, providing extra mechanical protection, UV resistance, and environmental sealing. It is particularly important in outdoor, buried, or submerged installations where the joint may be exposed to moisture, abrasion, or chemical attack .
Installing a cold shrink joint without the end sleeve is possible, especially in controlled indoor environments or where the joint is not exposed to harsh conditions. Key considerations include:
Advantages:
A cold joint without an end sleeve can function effectively in indoor or protected environments, but for outdoor, buried, or high-stress installations, using the end sleeve is recommended to ensure long-term reliability and compliance with safety standards . Proper installation techniques and environmental considerations are critical to maintain the joint's performance.
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Search our portfolio of Cold Shrink Cable Accessories Models & Products and select your specifications.
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Cold joint is the adhesion-adhesion deficiency that visibly occurs at the joining surfaces of these castings into different parts.
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Cold shrink technology involves using pre-stretched rubber sleeves that are placed around
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