Pol-Ease® 2500 Release Agent, is a washable release agent that comes in an aerosol can and can be used on sealed or non-porous models before applying liquid silicone rubber. In some cases, no release is needed before applying liquid silicone, but for added insurance, Pol-Ease® 2500 Release Agent can be used. This release is useful for preventing liquid silicone rubber from sticking to cured silicone, for example, when pouring a two piece silicone block mould.
Pol-Ease® 2500 Release Agent can be used for casting as well as mould making. To extend mould life, spray and brush Pol-Ease® 2500 Release Agent into a silicone mould when casting materials such as polyurethane plastics, rubbers or epoxies. It may also be sprayed into polyurethane moulds before casting polyurethane liquid plastics, but the moulds will not last as long as they would if Pol-Ease® 2300 Release Agent was used in the polyurethane mould.
The main reason for using Pol-Ease® 2500 Release Agent in a polyurethane mould would be to cast a part that can be cleaned more easily than a part covered with Pol-Ease® 2300 Release Agent. PolEase® 2500 does contain a small quantity of silicone, but it washes off much easier than Pol-Ease® 2300 Release Agent, a desirable trait when parts need finishing/painting.