Silicone rubber is excellent for replacement of baffle seals as it exceeds asbestos type seals in durability and flexibility over its entire operating heat range of -80 degrees F to +425 degrees F. 3" x 9 ft. rolls that can be cut and trimmed for multiple uses. Meets Mil Spec ZZR765B. ISR3 meets Mil Spec AMS3320. (For reinforced see Part No. H9185)