Kaiflex STplus – Enhanced Elastomeric Pipe Insulation for Fire Safety and Thermal Efficiency

The Kaiflex STplus Collection features flexible, closed-cell elastomeric insulation designed for superior fire performance, condensation control, and energy efficiency in HVAC, refrigeration, and plumbing systems. Manufactured by Kaimann, STplus builds on the proven Kaiflex ST formulation with improved Euroclass fire ratings and low smoke development, making it ideal for public and commercial buildings.

Product Overview

Kaiflex STplus is available in tube format with a smooth outer skin and integrated vapor barrier. It is suitable for hot and cold water services, chilled water lines, heating systems, and air conditioning ductwork.

Key specifications:

• Material: Flexible elastomeric foam (FEF)
• Thermal conductivity: ≤ 0.034 W/(m·K) at 0 °C
• Water vapor diffusion resistance: μ ≥ 10,000
• Fire classification: Euroclass B-s3, d0 (EN 13501-1)
• Temperature range: -50 °C to +110 °C
• Formats: Tubes in 2 m lengths, available in 9 mm to 25 mm wall thicknesses and multiple internal diameters

Applications

• HVAC pipework in public, commercial, and industrial buildings
• Chilled water and refrigeration systems
• Domestic hot and cold water services
• Service risers and plant rooms
• Areas requiring enhanced fire safety and low smoke emission

Performance Benefits

• Improved fire classification for safer use in escape routes and occupied spaces
• Closed-cell structure prevents condensation and corrosion under insulation
• Dust-free, fibre-free, and antimicrobial for indoor air quality
• Integrated vapor barrier eliminates need for additional sealing
• Compatible with Kaiflex tapes, adhesives, and pipe supports