Pemko S88D21 252" 21' Adhesive Perimeter Gasketing Dark Brown Finish

The S88D21 adhesive perimeter gasket seals gaps up to 1/16" around door frames to prevent air infiltration and maintain building energy efficiency. This 252-inch silicone gasket installs on the frame perimeter using adhesive backing, solving weatherization challenges in commercial and institutional buildings. Pemko designed this dark brown gasket to compress and conform to irregular surfaces while maintaining consistent sealing performance.

The silicone material resists weathering and temperature extremes while the adhesive mounting eliminates the need for mechanical fasteners. At 21 feet long, this gasket handles most standard door openings in a single piece, reducing installation time and potential leak points. The dark brown finish blends with common door frame colors.

Material	Silicone
Length	252" (21')
Gap Seal	Up to 1/16"
Mounting	Adhesive
Finish	Dark Brown
Warranty	5 Years Limited

This gasket meets UL 10C positive pressure fire testing standards for fire-rated door assemblies, UL 1784 air leakage requirements, ASTM E283 air infiltration testing, and ANSI/BHMA A156.22 door gasketing standards. GREENGUARD Gold certification ensures low chemical emissions for indoor air quality. For broader building code context, see NFPA 101 Life Safety Code egress requirements.