The silicone will cure in closed environments and is therefore suitable for potting, encapsulating and large castings. In some cases, a release agent, such as Mikon F57 aerosol wax, should be used to prolong mould life. Pro Sil 40 can be accelerated with heat to reduce the pot life and cure time.
The silicone can be thickened with silicone thixotropic liquid, RTV Thixo, for brush-on applications. Certain substances and substrates may inhibit the cure of Pro Sil 40. Care must be taken to avoid contamination from tin curing silicones, chlorinated rubber compounds, PVC plasticizers, epoxy amines, sulphur containing materials and butyl elastomers.