RTV133 Condensation cure rubber.
Two part low viscosity silicone rubber, suitable for most polyester and epoxy casting resins along with our Fastcast PU resin.

Condensation Cure Silicone Rubber.
RTV133 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. RTV133 has exceptionally high tear strength and good elongation, can be thickened using our butter-on additive ideal in cases where the plug is fixed (ceilings, church walls etc).