RTV 134 is a two-component condensation cure, low viscosity silicone rubber. Suitable for mould making, producing replicas of polyester, epoxy resins, urethane foam and wax etc. It can precisely reproduce the shape of the original model. RTV 134 has exceptionally high tear strength and good elongation. Comes supplied with fast catalyst. Simple 100A: 5B mixture by weight
(1.05kg kit comes wupplies as 1kg Part A Base with 50g part B catalyst etc)
 
Pot life: >8mins
Cure time: 4-6hrs
Shore Hardnes: 23-27
 
Special Features
· Fast cure
· Low viscosity
· Easy to demould
· Excellent tear strength and tensile properties
· Low shrinkage
 
RTV 134 will self degas, but to achieve best results the product should be de-aired under vacuum. When vacuuming, the material will expand to approximately five times its original volume and collapse, it is at this point the material has been successfully vacuumed. Pour the vacuumed silicone rubber uniformly all over the surface of the master. Any bubbles must be broken with positive air pressure or by passing a spatula gently across the surface. For intricate moulds degas again ensuring there is sufficient room in the mould box for expansion of the rubber. When degassing use 40 mbar vacuum, degassing is completed about 1 minute after the frothing ceases. Mould life and tear strength are improved with degassing.