What is Epo-Weld™ HTC used for?

Epo-Weld™ HTC is a range of high-temperature inorganic coatings, conductive adhesives, and putties for bonding, coating, and sealing ceramics, metals, and glass at service temperatures up to 2,200°F. Applications include thermal and electrical insulation on heating elements, furnace linings, sensor housings, and kiln components.

What is the difference between Epo-Weld™ HTC, HTCA, and HTCP?

Epo-Weld™ HTC grades are general-purpose high-temperature coatings for electrical insulation and thermal protection on ceramics and metals. Epo-Weld™ HTCA grades are nickel-filled conductive adhesives for grounding and shielding in high-heat zones. Epo-Weld™ HTCP grades are putties for gap-filling, patching, and sealing refractory components.

How do Epo-Weld™ HTC coatings cure?

Epo-Weld™ HTC formulations use a stepped heat cure. The typical schedule involves initial cure at room temperature followed by elevated temperature steps at 200°F, 500°F, and higher to develop full ceramic bond strength. Follow the specific cure schedule on the product TDS for each grade.

Are Epo-Weld™ HTCA grades suitable for grounding applications?

Yes — Epo-Weld™ HTCA nickel-filled conductive adhesives are specifically recommended for grounding and shielding applications in high-heat zones. The nickel filler provides good electrical conductivity, oxidation resistance, and magnetic shielding, while the inorganic binder maintains bond integrity to 1,000°F.

Can Epo-Weld™ HTCP putty be used for patching refractory?

Yes — Epo-Weld™ HTCP putties are formulated for patching, gap-filling, and sealing refractory linings, furnace brickwork, and ceramic components. The putty consistency allows application into cracks and voids, curing to a hard, heat-stable ceramic that withstands thermal shock and cycling.

What substrates do Epo-Weld™ HTC coatings bond to?

Epo-Weld™ HTC coatings and adhesives bond to metals (steel, aluminium, copper), ceramics (alumina, silica, zirconia), glass, and refractory materials. Surface preparation — cleaning and roughening — is recommended to maximise adhesion on smooth metal substrates.

High Temperature Glass Coatings — Epo-Weld™

Inorganic coatings, conductive adhesives, and putties formulated for service on ceramics, metals, and glass at temperatures from 1,000°F to 2,200°F. Used in furnace linings, heating element insulation, sensor housings, and refractory maintenance.

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1,000°F to 2,200°F Service Range

Inorganic formulations stable across a broad temperature range — from lower-temperature coating applications to extreme high-heat ceramic environments requiring long-term thermal stability.

Electrical Insulation on Heated Metal Surfaces

HTC grades coat bare metal heating elements and furnace components with a dielectric ceramic layer — providing electrical isolation where standard polymer coatings would decompose.

Dielectric to Conductive in One Ceramic Range

Three product families in one range: HTC dielectric coatings, HTCA nickel-filled conductive adhesives, and HTCP putties for refractory patching and gap-filling.

Product Range

Technical Specifications

High-temperature coatings, conductive adhesives, and putties for ceramics, metals, and glass
rated for continuous service up to 2,200°F.

Applications

Coatings That Outlast the Heat

Epo-Weld™ HTC formulations are specified where polymer coatings fail and bare metal surfaces
require insulation, protection, or conductive bonding at sustained high temperatures.

Glowing resistance wire heating elements inside industrial oven for Epo-Weld™ HTC dielectric ceramic coating

Heating Element Insulation

Coat resistance wire and bare metal heating elements with a dielectric ceramic layer for electrical isolation at sustained operating temperatures. Replaces polymer-based coatings that soften and carbonise above 400°F.

$Molten metal tapped from industrial blast furnace with refractory lining visible for Epo-Weld™ HTCP putty repair$

Furnace Lining & Refractory Repair

HTCP putties patch cracks, spalls, and worn areas in furnace brickwork and ceramic linings. Fast-setting grades restore structural integrity between production runs without full lining replacement.

Orange industrial sensor housing mounted on metal ductwork for Epo-Weld™ HTC high temperature coating protection

Sensor & Thermocouple Housing

Coat ceramic sensor housings and thermocouple protection tubes with HTC for moisture resistance, chemical protection, and thermal cycling stability from cryogenic to 2,200°F service.

Wound copper coil for high-temperature grounding and EMI shielding with Epo-Weld™ HTCA conductive adhesive

Grounding & Shielding (HTCA)

Nickel-filled HTCA adhesives provide electrically conductive bonds in high-heat zones for grounding straps, EMI shielding panels, and chassis connections — replacing silver-filled adhesives at lower cost.

Hands shaping clay on pottery wheel in ceramic production with Epo-Weld™ HTC kiln furniture coating

Kiln Furniture & Ceramics

Bond and coat kiln plates, setters, and support posts. HTC coatings prevent direct contact between ceramic ware and kiln furniture — reducing sticking and contamination during high-temperature firing.

Welder repairing metal components with sparks for industrial maintenance using Epo-Weld™ HTCP high temperature putty

Industrial Maintenance & Repair

HTCP putties repair metal castings, fill porosity in heat-exchanger components, and seal refractory joints in situ — curing to a hard ceramic without furnace downtime for controlled-atmosphere treatment.

FAQ

Frequently Asked Questions

Common questions about Epo-Weld™ HTC high temperature glass coatings.

Epo-Weld™ HTC is a range of high-temperature inorganic coatings, conductive adhesives, and putties for coating, bonding, and sealing ceramics, metals, and glass at service temperatures up to 2,200°F. Applications include electrical insulation on heating elements, furnace lining repair, sensor housing protection, and refractory maintenance.
Epo-Weld™ HTC grades are general-purpose dielectric coatings for electrical insulation and thermal protection. Epo-Weld™ HTCA grades are nickel-filled conductive adhesives for grounding and EMI shielding in high-heat zones. Epo-Weld™ HTCP grades are putties for gap-filling, crack repair, and sealing in refractory and industrial maintenance applications.
Epo-Weld™ HTC formulations use a stepped heat cure. A typical schedule involves initial room-temperature drying followed by progressive elevated-temperature steps at 200°F, 500°F, and higher to develop full ceramic bond strength. Refer to the product TDS for the specific cure schedule for each grade.
Yes — Epo-Weld™ HTCA nickel-filled conductive adhesives are formulated for grounding and EMI shielding in high-heat zones. The nickel filler provides electrical conductivity, oxidation resistance, and magnetic shielding while the inorganic binder maintains bond integrity to 1,000°F.
Yes — Epo-Weld™ HTCP putties are formulated for patching, gap-filling, and sealing refractory linings, furnace brickwork, and ceramic components. The putty consistency allows application into cracks and voids, curing to a hard, heat-stable ceramic that withstands thermal shock and cycling in service.
Epo-Weld™ HTC coatings and adhesives bond to metals (steel, aluminium, copper), ceramics (alumina, silica, zirconia), glass, and refractory materials. Surface preparation — cleaning and mechanical roughening — is recommended to maximise adhesion on smooth metal substrates.

High Temperature Glass Coatings — Epo-Weld™

Technical Specifications

Coatings That Outlast the Heat

Frequently Asked Questions

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