SS4120 is a primer that is formulated for use with Momentive Performance Materials RTV silicone rubber adhesive sealants. Momentive Performance Materials one-component products offer primerless adhesion to many substrates. Primers are used to help promote adhesion to difficult-to-bond substrates. For most Momentive Performance Materials two-component products, a primer is required when an adhesive bond is needed between the silicone rubber compound and a non-silicone surface.

All primers are one-component products requiring no mixing and are supplied ready-to-use as easily pourable solvent solutions.

SS4120 primer helps promote adhesion of Momentive Performance Materials addition cure RTVs and is used where clarity is needed.

Features:
One-component – no mixing
Simple handling procedures and equipment for easy use and low processing cost.
Dry at room temperature and ambient humidity conditions
Helps promote adhesion to many substrates
Transparent to preserve visibility of colorless products.