High-Temperature Ceramic Putty — Epo-Weld™

Epo-Weld™ HTCP ceramic putties are used for repairing and sealing high-temperature industrial components — including exhaust systems, boiler doors, furnace casings, molten metal troughs, and cast iron or aluminum castings. They fill cracks, voids, and blowholes to restore structural integrity without welding.

Service temperature depends on the grade. HTCP-550 and HTCP-950 are rated to 2,000°F (1,090°C). HTCP-650 — the ceramic fiber gasket seal — is rated to 2,350°F (1,300°C). HTCP-750 is rated to 1,400°F (760°C) and is designed for aluminum and steel casting repair.

Yes — Epo-Weld™ HTCP-750 cures to a machinable compound, allowing repaired castings to be drilled, tapped, or machined back to original tolerances. Other grades cure to a hard, rigid ceramic mass suitable for sealing and structural repair but are not intended for post-cure machining.

Single-part grades (HTCP-550, HTCP-650, HTCP-950) are ready to use straight from the container — no mixing required. They air-cure at room temperature and are ideal for field repairs and maintenance. Two-part HTCP-750 requires mixing but offers a machinable repair compound suited for precision casting restoration where dimensional accuracy is needed.

Yes. Epo-Weld™ HTCP-950 is formulated as a thixotropic, non-sagging paste specifically for vertical surfaces and overhead components. It stays in place during cure without slumping, enabling in-situ repairs up to 3/8 inch (10 mm) thick on incinerators, boilers, and exhaust ducting.

Epo-Weld™ HTCP grades adhere to cast iron, steel, stainless steel, and aluminum. HTCP-550 and HTCP-950 are optimised for cast iron and stainless steel repair. HTCP-750 is specifically designed for aluminum and steel casting restoration. HTCP-650 seals metal surfaces in boiler and furnace applications where conformable gasket sealing is required.