Pemko S88BL21 252" 21' Adhesive Perimeter Gasketing Black Finish

The S88BL21 adhesive perimeter gasketing seals gaps up to 1/16" around door frames and other openings. This silicone weatherstrip installs directly to door frames or jambs where air infiltration compromises building envelope performance. Pemko designed this 252-inch roll for continuous perimeter sealing on standard commercial doors.

The adhesive backing eliminates mechanical fasteners and provides clean installation on most frame materials. Black silicone construction resists weathering and maintains flexibility across temperature ranges. This gasketing compresses under door closure to create an effective air barrier.

Material	Silicone
Length	252" (21 feet)
Mounting	Adhesive backing
Gap Seal	Up to 1/16"
Finish	Black
Warranty	5 years limited

This gasketing meets UL 10C positive pressure fire testing standards and UL 1784 air leakage requirements. ASTM E283 and ANSI/BHMA A156.22 compliance supports weatherization and door sealing specifications. GREENGUARD Gold certification confirms low chemical emissions.

Fire door assemblies requiring UL 10C fire ratings benefit from this tested perimeter seal. For broader building envelope context, NFPA 101 egress requirements often intersect with door sealing specifications.