32mm Wall 35mm Bore 2m Long Armaflex HT S Pre Covered Black Tube

HT/ArmaFlex S – High‑Temperature, UV‑Resistant Outdoor Pipe Insulation

HT/ArmaFlex S is a premium EPDM insulation designed for outdoor pipework and high‑temperature applications. Its closed‑cell elastomeric foam core is factory‑covered with a durable polyolefin‑copolymer jacket, providing long‑term protection against UV exposure, weathering and mechanical impact. This makes it ideal for external heat pump pipework, solar thermal systems, hot gas lines and any installation where insulation is exposed to the elements.

Key Benefits

• Outstanding UV and weather resistance for long‑term outdoor use
• Wide operating temperature range from −50°C to +150°C
• Closed‑cell structure for excellent moisture control and condensation prevention
• Factory‑applied outer covering removes the need for painting or additional jacketing
• Highly flexible and tear‑resistant for easy installation around bends and fittings
• Compatible with ArmaFix load‑bearing supports for a consistent, professional finish

Typical Applications

• External heat pump pipework
• Solar collector and renewable energy pipework
• Hot gas and steam lines
• Dual‑temperature systems
• Any installation requiring long‑term UV stability and high‑temperature performance

Technical Performance

• Service temperature: −50°C to +150°C
• Thermal conductivity (λ at 40°C): ≤ 0.042 W/m·K
• Water vapour diffusion resistance (μ): ≥ 4,000
• Reaction to fire: Class E (EN 13501‑1)
• UV resistance: Excellent (EN ISO 4892‑2)
• Supplied in 2‑metre lengths

Installation Guidance

For best results, all seams and joints should be sealed using ArmaFlex HT625 adhesive to maintain vapour barrier integrity. The factory‑applied outer covering means no additional coatings or jacketing are required.

Available Sizes

HT/ArmaFlex S is available in a range of bore sizes and insulation thicknesses to suit different pipework specifications. Each section is supplied in 2‑metre lengths for fast, efficient installation.

Why Choose HT/ArmaFlex S

HT/ArmaFlex S provides a robust, low‑maintenance solution for outdoor pipework exposed to harsh weather and high operating temperatures. Its combination of UV stability, moisture resistance and long‑term durability makes it a dependable choice for modern HVAC and renewable energy systems.