CE36S Co-Ext Backing Gasket (2mm Gap) S/Prene x 100M Roll - Black

The CE36S Co-Extruded Backing Gasket (100-Metre Roll, Black) is a high-volume, commercial-grade glazing wedge and weather-stripping component distributed by architectural systems suppliers such as Alspec. Manufactured using a dual-material co-extrusion process, the gasket permanently bonds a rigid polymer base — designed to slide smoothly and lock tightly inside an aluminium frame's structural gasket T-slot — with a soft, flexible Santoprene (S/Prene) rubber bulb. Unlike standard PVC seals, Santoprene offers exceptional resistance to UV radiation, extreme temperature fluctuations, and ozone degradation, retaining its elasticity and compression memory over decades without becoming brittle, cracking, or shrinking. The gasket is specifically engineered to seal a 2mm glass-to-frame gap, providing a consistent, water-tight, and acoustic barrier once compressed against a glass pane or metal panel face. It is supplied as a continuous 100-metre trade roll, minimising material wastage during factory production or large-scale multi-storey field installations, and is finished in solid Black to remain visually discrete against dark anodised or powder-coated aluminium framing extrusions. This backing gasket is standard specification for high-end commercial glazing suites, including Alspec McArthur Evo & Hunter Evo storefront flush glazing systems, heavy-duty acoustic office partition panels, and perimeter air and water barrier sealing on structural curtain walls.