3M™ Fire Barrier Silicone Sealant 2000+ is an elastomeric, ready-to-use, single-component, neutral-cure silicone sealant that cures upon exposure to atmospheric humidity. We designed this sealant to form a flexible firestop seal that also acts as a barrier to airborne sound transmission. This produc 3M™ Fire Barrier Silicone Sealant 2000+ is an elastomeric, ready-to-use, single-component, neutral-cure silicone sealant that cures upon exposure to atmospheric humidity. We designed this sealant to form a flexible firestop seal that also acts as a barrier to airborne sound transmission. This produc SKU: 2000+ Loading... Availability Loading... Selected quantity should be in between 1 and 99999. Product is sold in multiples of 12 - Enter Quantity + Add To Cart