- Product Type:1K (1 component) Sealant
- Compatible Substrates & Surfaces:Polyisocyanurate, Phenolics, Glass
- Application Method:Trowel
- Features:Vapor Barrier, Flexible
Foster® Flextra® Sealant 95-50 is a single-component sealant primarily composed of butyl rubber. It serves as a vapor barrier sealant, typically applied in the joints of various insulation materials, including cellular glass, polyisocyanurate (PIR), urethane, and phenolic foam board stock insulations. This sealant maintains its soft and flexible properties, safeguarding insulation from damage caused by thermal cycling across a wide temperature range.