High Temperature Silicone Sealant Adhesive 300ml UK Made. Fortafix Flexseal 350.

Unlike many high-temp sealants, Flexseal 350 is fully resistant to weathering and ageing, making it suitable for both internal and external applications. Whether you are gasketing engine parts, sealing industrial flues and ducting, or fixing ceramic ropes in stoves, Flexseal 350 provides a heavy-duty, chemical-resistant bond that won't crack or shrink under pressure.

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