Specialty Materials
Crystal Clear Rubber Glass (R-1120)
R-1120 A/B is a two-part, low viscosity, Tin RTV (Condensation Cure) silicone rubber. This system was specifically formulated for applications where optical clarity is required. It is used for potting, encapsulation, special effects, i.e., fake ice and glass, and any application where crystal clarity is needed. Pre-Cured Blocks are available-- 25lbs. (Dimensions 13”x9”x5.5”).
Physical Properties of Material
Color: Clear, Transparent
Viscosity @ 25 C: 10,000 cps
Shelf Life: 6 months
Specific Gravity: 1.01
Durometer: 20 A Shore
Work Time: 15 Minutes
Cure: 1 to 5 days depending on thickness
Mixing and Curing
Mix R-1120 A with 10% of R 1120-B, using two containers when mixing to assure a thorough mix and immediately pour into mold. Pot life will vary due to environmental changes. A pre‑test of a small amount will determine work time, usually 15 minutes. Pressure pot may be used to assure bubble release and clarity.
** Large sections over 1" thick could take up to 3-5 days to properly dry.
Contact Technical Support for assistance in your application of R‑1120 A/B. This material can dry differently from summer to winter. Accelerated cures not recommended.
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.