Quadrios 25CA495 Adhesive-Lined Heat Shrink Tubing, 2:1, 25.4 mm Diameter, 1 m, White

Electricians and maintenance technicians reach for this Quadrios heat shrink tubing when they need a durable, waterproof seal on cable splices and connectors. The white polyolefin sleeve shrinks to half its original diameter when heated, while the inner adhesive lining melts to create a strong, moisture-resistant bond. With a 25.4 mm inner diameter before shrinking, it fits over larger cables and connectors, and the 1-meter length provides ample material for multiple repairs.

Key specifications

• Shrink ratio: 2:1
• Inner diameter before shrinking: 25.4 mm
• Inner diameter after shrinking: 12.7 mm
• Length: 1 m
• Colour: White
• Material: Polyolefin with adhesive lining
• Operating temperature range: -55°C to +125°C
• Minimum shrink temperature: 110°C
• Dielectric strength: 15 kV/mm
• Flame retardant: Yes (self-extinguishing)
• UV resistant: Yes
• Waterproof: Yes
• Chemical resistant: Yes
• Halogen-free: Yes
• Wall thickness after shrinking: 2.5 mm

Why choose it

The adhesive lining sets this tubing apart from standard heat shrink. It flows into gaps and irregularities, sealing out moisture, dust, and chemicals. The white colour is ideal for colour-coding or for applications where a clean, bright appearance is required. The 2:1 shrink ratio ensures a tight fit over connectors and splices, and the wide operating temperature range makes it suitable for both indoor and outdoor use.

Ideal use cases

• Insulating and sealing electrical splices in automotive, marine, and industrial wiring
• Protecting cable joints from moisture and corrosion in outdoor installations
• Providing strain relief for connectors and cable entries
• Colour-coding cables for identification in complex systems

Good to know

For best results, use a heat gun set to at least 110°C and apply heat evenly around the tubing until it fully shrinks and the adhesive flows. The tubing is halogen-free, making it suitable for environments where toxic fumes are a concern. It meets RoHS compliance and offers good resistance to UV radiation and common chemicals.