3/4 in x 24 in x 48 in Calcium Silicate High Temperature Insulation MPN:684699
3/4 in x 24 in x 48 in Calcium Silicate High Temperature Insulation
Protect your high-temperature equipment with Johns Manville's 3/4 in x 24 in x 48 in Calcium Silicate Insulation. This dense, unfaced board offers minimal water vapor absorption and a maximum operating temperature of 1,700 Degrees F, making it ideal for use in industrial kilns, furnaces, and dryers. Its closed-cell structure provides a high level of thermal performance, with an R-value of 0.77. Suitable for applications where flexibility is not required, this insulation is perfect for new construction or replacement projects. Its durability and performance make it a valuable asset in the most demanding environments.
Top product features:
- High Temperature Insulation provides thermal resistance up to 1,700 Degrees F
- Calcium Silicate material offers minimal water vapor absorption
- Closed foam cell structure provides consistent insulation performance
Top product applications:
- Industrial Furnace Insulation
- High Temperature Pipe Wrap
- Foundry and Forge Insulation
High Temperature Insulation, Density 55 lb/cu ft, Facing Material Unfaced, Flexibility Not Applicable, Foam Cell Type Closed, Form Board, Insulation Color White, Insulation Material Calcium Silicate, Maximum Operating Temperature 1,700 Degrees F, Minimum Operating Temperature 0 Degrees F, Overall Length 24 in, Overall Width 4 ft, R Value 0.77, Thickness 3/4 in, Standards ASTM C656, C795, E119, E136, E72, E84, NFPA251, UL 1479, UL 1709, UL 263, Water Vapor Absorption Minimal
Additional Information
- Country of Origin: US
- Drop Ship Item: Yes
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 270 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 50.94
- Package Width: 24.88
- Package Height: 1.62
- Package Weight: 56.00
Product info last updated on February 14, 2026 5:20pm UTC
Category: Heating Equipment