KL 25 Hard Joint

The hard joint solution for the most demanding hygiene requirements

KL 25 is the proven joint sealant for seamless wall and ceiling systems in cold rooms, wet areas, and hygiene-sensitive environments. In use for over 20 years, this joint compound meets the highest standards for hygiene, durability, and application efficiency. When combined with GFRP elements, the KL 25 hard joint provides a long-lasting, maintenance-free alternative to conventional soft expansion joints.

The fully curing, yet permanently elastic compound is physiologically safe, non-porous, and does not support the growth of mold or bacteria. KL 25 remains permanently sealed – without cracking or joint failure – even under high mechanical stress and frequent wet cleaning with aggressive cleaning agents.

Technical Specifications

• Color: White, similar to RAL 9016 (other colors available on request)
• Cartridge system: 400 ml dual cartridge with static mixing nozzle
• Shelf life: Up to 12 months in sealed original packaging

Application & Accessories

Detailed application instructions are available for download as a PDF. Compatible cartridge guns (manual or pneumatic) are available as accessories – also offered as rental units upon request.