Description
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 atomospheric 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 atmosheric 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.
Key Features and Typical Benefits
-One-component product
-Thixotropic paste consistency
-Low flammability-has a UL rating of V-0 or V-1 using UL-94 test
- Capability to cure at room temperature and ambient humidity conditions
-Self adhesion properties
-Resistance to high temperatures
-Low temperature flexibility
-Excellent weatherability and ozone and chemical resistance
-Excellent electrical insulation properties
-Non-halogen flame retardants
