Products
Clear Tin RTV Rubber (R-1220 A/B)
R-1220 A/B Two-Part, Tin RTV (Condensation Cure) silicone developed specifically for its clarity. This unique system provides clear, semi-durable rubber used for custom molds and parts in the entertainment and special effects industries. R-1220’s low viscosity offers easier mixing and pouring. Parts can be tinted with small amounts of Silicone pigments. *Use in place of R-1120 Rubber Glass for more tear resistant parts.
Physical Properties of Liquid Material
Color: Clear, Transparent
Viscosity Mixed@ 25 C: 30,000 cps
Shelf Life: 3 months
Typical Properties of Cured Rubber
Hardness: 25 A Tear: 51
Specific Gravity: 1.06 Tensile: 392
Elongation: 455%
Mixing Instructions:
Mix R‑1220 A with 10% of R-1220 B. Use two containers when mixing to assure a good mix. Pot life will vary due to environmental changes (ambient temperature and relative humidity). A pre‑test of a small amount will determine work time, usually 35 minutes. Pressure pot may be used to assure bubble release and clarity. R-1220-A may increase in viscosity (with time) and should be power mixed to reduce viscosity for processing.
Please contact Technical Support for assistance in your application of R-1220 A/B. This material can dry differently from summer to winter. Accelerated cures not recommended, but where needed use rapid set 4 drops to 12 drops per pound.
The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent.