32×48 K-Flex ST/SK Self-Seal | Pre-Slit Tube Insulation with Adhesive Tape (2m)

K-FLEX® ST/SK Self-Seal is premium pre-slit elastomeric tube insulation with integrated self-sealing adhesive tape for quick, reliable installation. The built-in adhesive strip ensures a perfect seal without additional tape or adhesive, saving time and labour while providing superior performance.

Tube Specifications

Wall Thickness: 32mm
Bore Size: 48mm (Iron DN 40 / 1+1/2")
Length: 2 metres per tube

Packaging & Ordering

Sold individually per 2m tube
Also available in full cartons: 7 tubes (14 metres total per carton)
Price shown is per individual 2m tube.

Key Benefits

• Self-sealing adhesive tape – Integrated adhesive strip for quick, reliable sealing without additional materials
• Pre-slit design – Easy installation over existing pipework
• Time and labour saving – No need for separate tape or adhesive
• Perfect seal every time – Built-in adhesive ensures consistent, reliable closure
• Wide temperature range – Performs from -40°C to +110°C
• Prevents condensation – Protects pipes and improves energy efficiency
• Fire safety – Euroclass BL-s2, d0 fire rating
• Very fine closed cellular structure – High technical performance with permeability μ ≥ 10,000
• Hygienic – Resistant to mould, fungi and bacteria
• Flexible and easy to install – Adapts to bends and fittings
• pH neutral – Prevents corrosion
• Environmentally friendly – Without CFCs and HCFCs

Technical Specifications

• Wall thickness: 32 mm
• Bore size: 48 mm (Iron DN 40 / 1+1/2")
• Length: 2 metres per tube
• Format: Pre-slit tube with self-sealing adhesive tape
• Material: Elastomeric nitrile rubber (Flexible Elastomeric Foam)
• Thermal conductivity: λ0°C ≤ 0.033 W/(m·K), λ40°C ≤ 0.037 W/(m·K)
• Service temperature range: -40°C to +85°C (ST/SK version)
• Fire rating: Euroclass BL-s2, d0
• Water vapour diffusion resistance: μ ≥ 10,000
• Water permeability: WS01
• pH: Neutral (7), Cl⁻ <300ppm
• Dimensional stability: Excellent – thermal conductivity does not change with time

Applications

Thermal insulation for copper and iron pipes in heating, cooling, air conditioning, and plumbing installations. Ideal for residential, commercial, and industrial applications requiring quick, reliable installation with integrated sealing.

Standards & Compliance

Harmonised standard: EN 14304:2009+A1:2013
Declaration of Performance: No. 01010207201-000W-CPR-18
Product code: 01010207201-000W
Manufacturer: L'Isolante K-Flex S.p.A., Via Don Locatelli 35, 20877 Roncello (MB), Italy
Notified bodies: Certification body No. 0751, Testing laboratory No. 0497
CE compliant: In accordance with Regulation (EU) No 305/2011

Certifications & Approvals

Environmental Product Declarations (EPD), ECO-BAU, MINERGIE-ECO, CE-MARINE (Bureau Veritas), ABS, DNV, Lloyd's Register, UL94, FM Approval.