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• Flexible: This mastic sealant stays soft and pliable for years, allowing removal and reshaping as needed. Ideal as a sealant clay for temporary or semi-permanent sealing around utility penetrations.
• Effective Air And Moisture Barrier: Forms a durable waterproof sealant that resists drafts, dust, and humidity ingress. The mastic compound adheres well to metal ducts, plastic pipes, and masonry surfaces without curing.
• Simple Tool-Free Application: Just knead and press the clay sealant into gaps by hand—no mixing or curing time required. This sealant is beginner-friendly and perfect for quick home maintenance tasks.
• Designed For HVAC Openings: Specially formulated for sealing unused air conditioning pipe holes and cable entries. Use this sealant clay to improve indoor comfort and reduce energy loss around wall penetrations.
• Odourless And Paintable Finish: Once applied, the mastic sealant remains neutral-smelling and can be painted over if desired. A reliable waterproof sealant alternative to rigid foams or tapes in dry indoor areas.

Product Features: Non-hardening sealing compound for indoor gaps and penetrations. Specifications: 6 pieces, total 750g (approx. 125g each). Material: Synthetic rubber-based mastic. Colour: White. Package Includes: 6 x sealant clay blocks. Tip: Store unused portions in a sealed bag to preserve flexibility and prevent drying.