Rubber insulation tape K‑flex K-FLEX ST 3 mm x 50 mm x 15 m (850NS020050)

K-flex rubber tape K-FLEX® ST, 3 mm thick, 50 mm wide and 15 m long is a flexible thermal insulation tape designed for insulating pipes, ducts and vessels. The tape provides thermal protection, resistance to water vapour and low water absorption, making it suitable for refrigeration, air-conditioning and plumbing systems that require condensation control and improved energy efficiency.

Advantages

The K-FLEX ST tape combines thin cross‑section insulation with good vapour resistance and low water uptake, helping to reduce heat loss and prevent condensation. Its flexibility and dimensional specifications allow easy application on curved and straight runs while maintaining service temperature range from -40 °C to +85 °C.

Suitable for

• Insulation of refrigeration and air‑conditioning pipes
• Thermal and condensation control on plumbing and drain lines
• Sealing and insulating small ducts, fittings and vessel connections

Key specifications

• Material: rubber (closed-cell elastomeric insulation)
• Length: 15 m
• Width: 50 mm
• Thickness: 3 mm
• Operating temperature range: -40 °C to +85 °C
• Water vapour resistance (EN 12086): μ ≥ 7000
• Low water absorption tested according to EN 13472

How to use

Measure and cut the required tape length, then wrap it around the pipe, duct or fitting ensuring full contact and overlap as needed to avoid gaps. Smooth the tape by hand to ensure adhesion and conformity to curved surfaces. For best thermal performance, ensure joints are tight and, where necessary, seal edges with compatible adhesive or tape recommended for elastomeric insulation.

Usage recommendations

Store rolls flat in a dry, shaded area and avoid prolonged exposure to direct sunlight. For installations exposed to mechanical damage or outdoor use, provide additional protection or cladding. Follow local codes and manufacturer instructions for jointing and fire‑safety requirements.