Raychem CRSM-107/29 Heat Shrink Wraparound Cable Repair Sleeve
This professional-grade Wraparound Cable Repair Sleeve is a highly reliable, permanent sealing and insulation system engineered specifically for fast jacket restoration and re-jacketing of damaged power cables. Manufactured from a heavy-duty, semi-rigid cross-linked polyolefin, the sleeve eliminates the need to cut or disconnect running lines. The wrap-around sleeve closes securely via an integrated raised rail and a stainless-steel channel mechanism. Upon applying heat, the sleeve undergoes a massive diameter reduction while its inner adhesive lining melts to create a moisture-proof, ultra-tight environmental seal around the affected cable footprint.
Key Features
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Innovative Rail & Channel Enclosure: Employs a quick-fitting slide-on metallic channel over raised edge-rails, permitting straightforward wraparound installation directly onto existing, in-service runs without sliding sleeves over uncoupled cable ends.
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Massive >3:1 Shrink Profile: Features an expansive 107 mm opening that shrinks down cleanly to a tight 29 mm recovered state, perfectly accommodating bulky cable joints, transitions, and irregular step-down diameters.
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Advanced Hot-Melt Adhesive Co-Extrusion: Outfitted with an inline factory-applied inner sealant lining that flows under heat to completely fill voids, gouges, and fissures in the damaged jacket.
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Halogen-Free Safety Profile: Compounded completely free of halogens, lead, and aluminum, ensuring non-corrosive, non-toxic smoke emission in the event of external structural fires.
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Rugged Climatic & Chemical Defense: Formulated to resist severe mechanical impacts, abrasions, UV irradiation, soil alkalis, and transformer oils during continuous open-air or direct-buried operations.
Technical Specifications
| Feature | Specification |
| Product Type | Wraparound Heat Shrink Cable Repair Sleeve |
| Manufacturer / Brand | TE Connectivity (Raychem) |
| Model / Series | CRSM-107/29 |
| Expanded Internal Diameter (Min) | 107 mm |
| Recovered Internal Diameter (Max) | 29 mm |
| Shrink Ratio | >3:1 |
| Voltage Class | Low-Voltage Insulation (le 1 kV); Jacket Repair up to 35 kV |
| Material Base | Medium-Wall, Cross-linked Polyolefin (XLPO) |
| Adhesive Style | Thermoplastic Hot-Melt Internal Sealant Coating |
| Operating Temp Range | -30°C to +100°C |
| Shelf Life | Unlimited (under normal storage conditions) |
Applications
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Sub-Surface & Trenching Repair: Serving as a primary jacket restoration layer over buried power systems, sealing out subterranean water tables and moisture ingress.
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Low-Voltage Joint Over-Rejacketing: Insulating and armor-protecting low-voltage (LV) inline inline power connections up to 1 kV.
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Medium-Voltage Outer Sealing: Providing environmental water-blocking and mechanical defense over spliced segments on medium-voltage distribution grids up to 35 kV.
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Industrial & Marine Retrofitting: Repairing compromised outer sheathing on heavy-gauge multi-core control cables, telecommunication bundles, or lead/aluminum-jacketed runs without shutting down facility circuits.
