Heat Shrinkable Fabric Sleeving (also known as Heat Shrinkable Woven Sleeving) is engineered by weaving a hybrid combination of polyolefin monofilaments and heat-shrinkable polyester multifilaments. When heated, the sleeve shrinks radially in a 2:1 ratio, tightly conforming to smooth, curved, or irregular hoses and cable bundles while delivering outstanding mechanical abrasion resistance and noise/vibration damping (NVH).
1. Product Overview & Key Specifications
Technical Feature | Description & Parameters |
Material Composition | Polyolefin Monofilament & Polyester Multifilament Hybrid Weave |
Shrink Ratio | 2:1 (Shrinks radially to 50% of its expanded diameter) |
Operating Temp. Range | -40°C to +125°C (+150°C peak tolerance) |
Shrink Temperature | Min. Shrink Temp: +110°C | Full Recovery Temp: +135°C to +150°C |
Certifications | RoHS, REACH, Halogen-Free, ISO 9001, ISO 14001 |
Key Advantages | 1. Superior Abrasion Resistance: Woven fabric structure offers outstanding resistance to severe friction and wear. 2. Noise & Vibration Damping (NVH): Suppresses rattling and chafing noises in tight engine bays. 3. Conformal Tight Fit: 2:1 shrinkage ensures a snug fit around bent pipes, fittings, and irregular shapes. 4. Excellent Flexibility: Maintains high flexibility after shrinkage without stiffening. |
Product Variants | Standard Heat Shrink Fabric, Flame Retardant (VW-1) Fabric Sleeving. |
2. Primary Application Scenarios
• Automotive & EV Fluid Lines: Rubber radiator hoses, coolant pipes, air conditioning lines, and turbocharger tubing where vibration chafing against chassis parts occurs.
• Hydraulic & Pneumatic Systems: High-pressure hydraulic rubber hoses in construction machinery, agricultural equipment, and mining vehicles.
• Industrial Robotics & Automation: Flexible hose lines, dynamic cable harnesses, and moving joints requiring wear protection and noise suppression.
• Railway & Heavy Transit: Under-chassis piping, braking system fluid conduits, and high-vibration wire bundles exposed to debris impact.
3. Step-by-Step Installation Guide
1 Size Selection:
◦ Choose a sleeve inner diameter (ID) before shrinkage that easily slides over the target hose/cable (including fittings).
◦ Ensure the fully recovered (shrunk) ID is smaller than the outer diameter of the hose/cable to guarantee a tight, anti-slip fit.
2 Cutting to Length:
◦ Cut the sleeving to length using a hot knife cutter or sharp scissors.
◦ Note: Unlike standard plastic heat shrink tubing, heat shrink fabric experiences minimal longitudinal contraction (typically < 5%).
3 Positioning:
◦ Slide the sleeve over the hose or cable assembly and position it directly over the designated friction or wear zone.
4 Heat Shrinking Process:
◦ Use an industrial heat gun (recommended temperature setting: 120°C–150°C), heat tunnel, or oven.
◦ Begin heating from the center and move outward toward both ends (or from one end continuously to the other) to prevent trapping air pockets.
◦ Heat evenly until the fabric sleeve completely contracts and tightly conforms to the contours of the target object.
