Application
Colnex-EC EPDM cold shrink end cap is made from highly weather-resistant EPDM rubber, engineered specifically for insulation and sealing protection of cable ends. During installation, simply remove the plastic core and the end cap contracts tightly onto the cable, providing secure coverage without the need for tools or heat—even in confined or fire-restricted spaces. It is widely used for all types of cable terminations, effectively preventing moisture and contamination, and ensuring long-term operational reliability. Colnex-EC is the preferred solution for dependable sealing and insulation of cable ends.
Features and Benefits
• Made of highly weather-resistant EPDM rubber, UV and acid/alkali resistant
• No heating or tools required, fast and easy installation, suitable for confined or fire-restricted areas
• Excellent mechanical and electrical properties ensures reliableinsulation and sealing for cable ends
• Effectively prevents moisture and contamination, ensures long-term cable reliability
| Property | Requirement | Test Method | Typical Data |
| Operating Temperature | / | / | -55℃ to +150℃ |
| Storage life recommended | / | / | 1 year |
| Hardness | Shore A46 | ASTM D 2240 | Shore A46 |
| Tensile strength | ≥9.8MPa | ASTM D 412 | ≥9.8MPa |
| Elongation at break | ≥720% | ASTM D 412 | ≥720% |
| Tear Strength | ≥25KN/m | ASTM D 412 | ≥35KN/m |
| Fungus Resistance | No growth | ASTM G21 28 days exposure | No growth |
| Water absorption | Wt Gain 1.3% | 24hrs in water at 90°C | Wt Gain 1.3% |
Product Dimension

| Table A. Product Dimensions | |||
| Part No. | As supplied (mm) | After recovered(mm) | Application Range (mm) |
| I.D. (D) | Length | ||
| Colnex-EC-25 | 25 | 60 | 11.6~20.9 |
| Colnex-EC-35 | 35 | 75 | 15.9~30.1 |
| Colnex-EC-55 | 55 | 82 | 26~49.2 |
| Colnex-EC-90 | 90 | 100 | 45.2~84.3 |
Custom sizes and colors are available upon request. Technical specifications are subject to change without prior notice. Minimum order quantities (MOQ) may differ from standard packaging quantities.