Silicone Tin RTV
R-1123 A / R-1121 B (25A Shore)
R-1123 A/R-1121 B Two-Part, Tin RTV (Condensation Cure) silicone rubber with high temperature resistance used for making durable, high strength molds and rubber parts. Best Condensation Cure silicone for high temperature resistance.
Features:
*Excellent physical properties with high tear resistance.
*Low viscosity and easily pourable.
*Produces mold with long working life.
*Good resistance against Polyester Resins
Property of Liquid Material
Color: Off white/Red
Viscosity @ 25 C: 80,000 cps
Shelf Life: 6 months
Property of Cured Rubber
Specific Gravity: 1.11
Hardness: 25 Shore A
Tensile Strength: 900
Elongation @ Break %: 400
Tear Resistance: 125
Mixing Instructions:
R-1123 A is processed by adding curing agent R-1121 B. The addition of 10% catalyst (by weight) has a pot life of 1 -1 1/2 hours and is ready for de-molding after 15 to 24 hours. R-1121 B has a trace of pigment for good dispersion. After the mold has been removed from the master, it should be left for 24 hours in order to develop its maximum mechanical strength.
For quick cures, adding additional catalyst R-1121 B (12%) or FC-200 (1-2% ) cure accelerator can be used for a 4-6 hour de-mold time. Because of rapid cure of rubber, pot life is significantly decreased as well as mold and storage shelf life. Please pre-test for workability.
Use Thix 5170 and PE-ESS-5F (Mini Fibers) to create brush-on, low sag rubber bladder.
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.