High-Temperature Insulation Products
Engineered for Performance in Extreme Heat Environments
When your system faces high heat, you need insulation and sealing materials that can stand up to the challenge. Specialty Gaskets Inc. provides a full range of high temperature insulation, high temperature gasket, and high temperature seal products — all designed for reliability, durability, and safety.
From fiberglass and ceramic to biosoluble and silica materials, our products deliver consistent performance across industrial, hearth, HVAC, appliance, and OEM applications.
Request a quote or ask for a sample today.
Why Choose Specialty Gaskets for High-Temperature Applications?
When temperatures rise, so do performance demands. Our high temperature insulation products are trusted for their superior thermal resistance, dimensional stability, and proven track record in harsh operating environments.
We combine material expertise, precision fabrication, and flexible supply options to deliver insulation and gasket products that meet your exact specifications — whether you need a custom high temperature gasket for sealing or a heat-resistant board or blanket for insulation.
- Rated for temperatures up to 2300°F (1260°C)
- Resistant to thermal shock and chemical exposure
- Excellent insulating properties and low heat storage
- Available in rolls, sheets, tapes, boards, and cut parts
- Safe, asbestos-free materials meeting industry standards
Explore Our High-Temperature Product Categories
Our complete lineup of high temperature insulation products covers every major material type and form to match your application.
Fiberglass Blankets & Mats
Lightweight, flexible, and easy to handle, fiberglass insulation blankets provide dependable performance up to 1000°F (540°C). Ideal for HVAC, appliance, and general industrial use, they offer excellent thermal efficiency and low cost of installation.
Applications:Duct insulation, oven linings, appliance gasketing, expansion joints
Ceramic Fiber Insulation
Ceramic fiber products deliver high-performance thermal protection at temperatures up to 2300°F (1260°C). Available as blankets, papers, boards, and textiles, these materials resist thermal shock, flame, and chemical corrosion.
Applications:Furnace linings, hearth insulation, appliance and industrial gasketing
Explore Ceramic Fiber Insulation
Biosoluble Fiber Insulation
Designed as an environmentally friendlier alternative to traditional ceramic fiber, biosoluble insulation offers similar high-temperature resistance with safer handling characteristics. Rated up to 2190°F (1200°C), these materials are ideal for OEM and hearth products requiring compliance and worker safety.
Applications:Fireplace and stove insulation, oven panels, industrial thermal barriers
Learn About Biosoluable Options
Silica Insulation Products
Silica fiber insulation provides exceptional strength, flexibility, and dielectric properties, performing reliably up to 2000°F (1093°C). These materials maintain structure under repeated heating and cooling cycles and resist most chemicals and molten metals.
Applications:Welding curtains, high-heat seals, protective insulation wraps
Ceramic Boards & 1401 Millboard
For rigid, high-strength insulation, ceramic boards and 1401 millboard deliver outstanding stability at elevated temperatures. Millboard offers excellent machinability, low shrinkage, and superior sealing performance in gasketing and heat shield applications.
Applications:Stove gaskets, appliance heat shields, kiln and furnace panels
Explore Ceramic Boards & Millboard
Industries That Depend on High Temperature Insulation
Your business operates in challenging environments. We make sure our high temperature insulation can handle it. Our products are used across a variety of critical systems:
Industrial Equipment: Furnace doors, expansion joints, and thermal shields
Hearth & Fireplace: Ceramic and millboard insulation for heat containment
HVAC Systems: Thermal barriers and seals in high-heat duct systems
Appliance Manufacturing: Oven door seals, range insulation, and gasket linings
OEM Applications: Custom-fabricated insulation for thermal management
Every product is tailored for efficient installation, long-term durability, and safe operation in high-temperature environments.
Technical Performance Data
All our high temperature insulation and gasket products are engineered and tested to meet demanding performance criteria.
| Property | Typical Range/Specification | Notes |
|---|---|---|
| Temperature Range | Up to 2300°F (1260°C) | Varies by material type. |
| Thermal Conductivity | 0.25 – 0.65 BTU·in/hr·ft²·°F | Ensures efficient hate management |
| Density Range | 6 – 24 lb/ft³ | Affects rigidity and insulation rating |
| Thickness Range | 1/32” – 2” | Standard and custom thicknesses available |
| Compression Strength | Up to 150 psi (board materials) | Ideal for gasketing and structural insulation |
| Moisture Absorption | <1% | Maintains insulation value in humid conditions |
| Compliance | ASTM C892, C892M, C553 | Meets standard industry specifications |
Need Detailed Data Sheets?
Contact our technical team for full specifications, temperature ratings, and compatibility details for your application.
Frequently Asked Questions
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We supply fiberglass, ceramic fiber, biosoluble fiber, silica, and millboard materials, each offering specific benefits depending on your temperature, flexibility, and environmental requirements.
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Our materials are rated from 1000°F (540°C) up to 2300°F (1260°C), depending on type, perfect for high-heat applications like furnaces, stoves, and appliances.
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Yes. All Specialty Gaskets high-temperature products are 100% asbestos-free and comply with modern health and safety standards.
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Absolutely. We can die-cut, waterjet, or CNC-cut insulation to any shape or dimension to match your drawing or specification.
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Yes. Our experts can help identify the best high temperature gasket or insulation for your specific operating environment, temperature, and mechanical needs.
