Cable Repair and Tape

R1 Wraparound Heat Shrink Cable Repair Sleeve

A rail and channel closure sleeve that repairs a damaged cable jacket without cutting the cable or removing the terminations

Operating temperature: -25 to 90°C
Minimum fully recovery temperature: 135°C
Standard Length: ≤1.5m
Standard Color: Black

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R1 Wraparound Heat Shrink Cable Repair Sleeve manufactured by UPM Heat Shrink

R1 · Cable Repair and Tape

Product Overview

What R1 Does

Cross-linked semirigid polyolefin outer layer provides abrasion and corrosion resistance.Pre-coated adhesive inner layer provides waterproof sealing protection.Rail and channel closure design,suitable for quick repair of damaged power cable in irregular shapes and sizes.

A rail and channel closure sleeve that repairs a damaged cable jacket without cutting the cable or removing the terminations It is manufactured by Dalian United Polymer Material Co., Ltd. in Dalian China where radiation cross linking extrusion and molding are all performed in house under one quality system.

Key Benefits

Repairs an installed cable with terminations in place and no cut required
Cross linked semirigid polyolefin outer layer for abrasion and corrosion resistance
Pre coated adhesive inner layer that seals the repair against water
Tensile strength of 14 MPa or higher so the sleeve resists further mechanical damage
Lengths up to 1.5 m so a long damaged section is covered in one piece

Who It Is For

Who Benefits Most from R1

The buyers and site teams this product was designed around

Utility Emergency Response Teams

A damaged jacket found during a fault investigation has to be repaired without an outage extension.

Construction Site Electrical Supervisors

Cable damaged by an excavator or dropped load during installation.

Mining and Quarry Maintenance

Trailing and feeder cable that takes continuous mechanical abuse.

Marine and Port Maintenance

Shore power and crane cable damaged by handling equipment.

Problems It Solves

Problems This Product Removes

Every one of these is a failure mode we have seen on real networks

Cutting and Jointing a Cable to Fix a Jacket Cut Is Expensive Overkill

A wraparound sleeve restores the jacket without touching the conductor insulation or screen.

Tube Sleeves Cannot Be Fitted to an Installed Cable

The rail and channel closure wraps around a cable that is already terminated at both ends.

Damage Is Rarely a Neat Cylinder

The wraparound design suits irregular shapes and sizes including damage over a bend or near a fixing.

A Repair That Lets Water in Is Worse Than No Repair

The pre coated adhesive inner layer seals the sleeve to the jacket on both sides of the damage.

Application Scenarios

Where It Is Used

Excavator Strike Jacket Repair

Restoring a buried cable jacket cut by machinery.

Duct Pull Abrasion Repair

Repairing jacket damage caused during installation.

Mining Trailing Cable Repair

Restoring cable subject to continuous abrasion.

Marine and Crane Cable Repair

Repairing shore power and reeling cable.

Corrosion Protection over a Joint

Adding an outer mechanical and corrosion layer over a completed joint.

Technical Data

Specifications and Dimensions

Test methods and requirements taken directly from the manufacturing specification

Technical Data

Property	Test Method	Requirement
Tensile Strength	ASTM D2671	≥14 MPa
Ultimate Elongation	ASTM D2671	≥300%
Heat Aging (150°C/168h) Tensile Strength Ultimate Elongation	ASTM D2671	≥12 MPa ≥200%
Water absorption (23°C/24h)	ASTM D2671	≤0.5%
Low-temperature flexibility (-25°C/4h)	ASTM D2671	No cracking
Heat shock (200°C/4h)	ASTM D2671	No cracking, dripping or flowing
Dielectric strength	ASTM D2671	≥15 kV/mm
Volume resistivity	ASTM D2671	≥1.0×1013Ω·cm
Dielectric constant	IEC 250	≤5.0
Fungus Resistance	ASTM G21	Non-growth

Dimensions

Part NO.	Application diameter (mm) Maximum	Minimum
R1-34/8	25	9
R1-42/10	32	12
R1-53/13	40	15
R1-62/22	47	25
R1-75/20	56	23
R1-85/25	65	30
R1-93/25	70	30
R1-105/30	80	35
R1-122/30	92	35
R1-135/34	102	40
R1-146/38	110	44
R1-164/42	123	48
R1-175/50	132	58
R1-200/55	150	63
R1-210/65	160	75
R1-230/80	175	92
R1-260/100	195	115

R1 construction and dimension diagram — R1 as supplied and fully recovered dimensions. D is the supplied inner diameter d is the recovered inner diameter and t is the recovered wall thickness.

CROSS REFERENCE · Tyco-Raychem: CRSM

Manufacturing and Quality

How It Is Made and Checked

Compounding extrusion radiation cross linking expansion and test all under one roof in Dalian

01
Compounding

Base polyolefin antioxidants flame retardants and functional fillers are mixed to a recipe held under our own formulation control rather than bought as a masterbatch.
02
Extrusion

The compound is extruded to the required wall and diameter. Co extruded products form two or three layers in a single pass so no interface can trap air.
03
Radiation Cross Linking

Electron beam irradiation creates the cross linked network that gives the material its shape memory. This step is what makes the product heat shrinkable.
04
Expansion

The cross linked part is heated expanded to its supplied diameter and cooled under tension so the expanded shape is locked in until heat is applied again.
05
Test and Inspection

More than 90 percent of product performance tests are carried out in our own laboratory including tensile elongation heat aging dielectric strength and tracking resistance.
06
Packing and Traceability

Each batch carries a production record so a delivered part can be traced back to its compound lot and process parameters.

Extrusion and irradiation workshop at the UPM Heat Shrink factory in Dalian China — Extrusion and processing workshop in Dalian. Line side inspection stations let an operator check wall thickness and concentricity without stopping the run.

Certification

ISO 9001:2015

Quality management system

IATF 16949:2016

Automotive quality management

ISO 14001:2015

Environmental management

ISO 45001:2018

Occupational health and safety

GJB 9001C-2017

Defence quality management

UL 224 E341796

Extruded insulating tubing

CE / RoHS

European conformity and restricted substances

CCS / ABS / DNV

Marine classification society approvals

Comparison

How R1 Compares

An honest comparison so you can rule this product in or out quickly

Damage Type	Recommended Repair
Jacket cut or abrasion only	R1 wraparound sleeve
Small irregular damage	T1 heat shrink tape
Conductor or insulation damage	Cut out and joint with C1 C15 or C35
Cable end exposed	Y2 end cap

Use Guide

How to Select and Install R1

The sequence our engineers walk customers through on every first installation

01
Confirm the Damage Is Jacket Only

If the core insulation screen or conductor is damaged the section must be cut out and jointed. R1 restores the jacket only.
02
Select by Application Diameter

The dimension table lists a maximum and minimum application diameter for each size. The cable must fall inside that range.
03
Clean and Abrade the Jacket

Clean at least 100 mm of sound jacket each side of the damage and lightly abrade it so the adhesive keys.
04
Wrap and Close the Rail

Wrap the sleeve around the cable and slide the metal channel along the rail to close it. The closure must be engaged along the full length.
05
Shrink from the Centre Outward

Heat the middle first then work to each end so air is expelled at both ends.
06
Confirm the Adhesive Bead

A continuous bead of adhesive at both ends and along the closure confirms the repair is sealed.

FAQ

R1 Frequently Asked Questions

The questions buyers ask before they place an order

Can R1 repair a cable that is still terminated at both ends

Yes. That is the reason the wraparound design exists. A tube would have to be threaded from one end which is impossible on an installed cable.

What if the conductor insulation is also damaged

R1 restores the jacket only. If the core insulation the metallic screen or the conductor is damaged the section must be cut out and a joint installed.

How long can a single repair be

Standard length is up to 1.5 m. For a longer damaged section use multiple sleeves with an overlap or tell us the length and we will quote a special.

Is it equivalent to Raychem CRSM

It is designed as a functional equivalent. Verify the application diameter range against your approved design before substituting.

What is the temperature limit

Service range is -25 to 90 °C. That is lower than the S3 family because the semirigid outer layer is optimised for abrasion resistance rather than temperature.

Can it be used underwater or in a flooded duct

It seals against water ingress when correctly installed and is used in buried and duct positions. The repair must be made in the dry with the cable surface clean and dry before the adhesive is heated.

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