Catalytic Expanding Gasket Replacement is a high-temperature sealing material designed for use in catalytic stoves, fireplaces, and other heating appliances where a tight, heat-resistant seal is required. Sold by the foot for flexible installation, this expanding gasket helps maintain proper stove efficiency by sealing joints, doors, and catalytic combustor housings. Its durable construction allows it to expand under heat, filling gaps to prevent air leaks and ensure optimal appliance performance.

• High-temperature gasket material designed for catalytic stoves and heating appliances
• Expanding seal design expands when heated to fill gaps and maintain a tight seal
• Helps improve stove efficiency by preventing unwanted air leaks
• Durable heat-resistant construction built to withstand high operating temperatures