The Silverline Offset T-Slot Foam Seal Weatherstripping features a foam-filled bulb seal that effectively seals gaps and prevents air, water, and noise from. . Default sorting, Sort by popularity Wide T-slot Pile no fin. Sold by the linear foot. T-Back Slides into slot Assorted Backings Widths. T-Slots are used in aluminum or vinyl windows, used as a frame or sash seal in casement windows, or on the meeting rail of double and single hung windows. Find products of Sealing Strips with high quality at AliExpress. Showing 1–16 of 46 results. T-Slot Mount Window Weatherstrip Seal 5/16" Bulb Bubble for 3/16" Slot Receptacle 3 Colors & 5 Length Options (25', Grey) ; Item Weight, ‎ ounces ; Item model. Quantity 13 = 13 linear feet. Buy T-Slot Mount Window Weatherstrip Seal 5/16" Bulb Bubble for 3/16" Slot Receptacle 3 Colors & 5 Length Options (10', White): Weather Stripping. Color Black. T-Slot. Get t-slot mount window weatherstrip seal with free return and fast delivery. T-Slot bulb seal with rigid PVC backing in option. T-Slot Seals. $ – $ Select options Height X Slide in Window Weatherstrip used primarily in Metal and Vinyl products. 18 Products. Window Hardware Extruded skin provides a unique UV resistant barrier with design features that enhance the weatherstrip's sealing performance.