Ready-to-Use, Silicone Rubber Adhesive Sealant

The Momentive RTV133 black, one-component, ready-to-use, silicone rubber adhesive sealant is an excellent candidate to consider for use in applications in the electronic, aerospace, appliance, transportation and other industries where resistance to burning of the finished product is a significant design consideration. On exposure to moisture in the air at room temperature, this adhesive sealant cures to a tough, durable, resilient silicone rubber. It utilizes an atmospheric moisture cure system, which releases an alcohol vapor from the sealant surface during cure. RTV133 sealant offers generally low odor cure with virtually no unpleasant smell or pungent cure by-products. It is, however, somewhat slower curing both in tack-free time and cure-through time than many atmospheric moisture cure silicone adhesive sealants that give off acetic acid vapors as a cure by-product.

Because RTV133 sealant has a paste-like consistency and will flow only with external pressure, it may be considered for use on horizontal, vertical and overhead surfaces in thicknesses to 6mm (¼ in.). It has sufficient uncured body to typcially adhere to small objects while cure is taking place. For applications requiring sealant thickness greater than 6mm (¼ in.), Momentive Performance Materials one-component, addition cure or two-component silicone rubber compounds with similar properties are available for consideration.

Typical applications include coatings for electronic and integrated circuits and semi-conductors and connections on electronic parts assemblies. Because of the typically low odor of its cure by-product, RTV133 sealant may be considered for mechanical applications in confined work areas where the odor of other moisture vapor cure sealants might be objectionable.