Because silicone polymers have very low surface energy, so almost nothing wets or adheres to the film they form. That gives clean, reliable release with minimal force, reduces mould fouling and part damage, and often allows several parts to be released from a single application. The same property gives good performance at high mould temperatures, which is why silicone products are standard in rubber, tyre and high-temperature plastic moulding.

Generally no. Silicone transfers to the part surface, and the low surface energy that released it also prevents paint, ink, adhesive, plating and welding from adhering. Attempting to finish such a part typically produces craters, fish-eyes or adhesion failure. Where the part will be coated, printed, bonded or plated, use a non-silicone or paintable release agent instead; this is precisely why that family of products exists.

With difficulty, and rarely economically. Solvent wiping, abrasion, flame or plasma treatment can reduce surface silicone, but achieving reliable, uniform removal across a production batch is demanding and adds a process step with its own quality risk. In practice, if a part needs finishing, the correct decision is made at the release agent rather than downstream. Trying to recover a silicone-contaminated batch is usually more expensive than remoulding it.

Commonly several, and semi-permanent silicone formulations give considerably more, which is one of their main commercial advantages over sacrificial products that transfer completely on every cycle. The actual number depends on the mould, the material, the temperature and the part geometry, and it falls as the film is progressively depleted. Establish the figure by trial on your own tooling rather than relying on a general claim.

A significant one where painting, coating or bonding is carried out in the same facility. Silicone spreads easily, transfers on hands, gloves, rags and tooling, and travels as aerosol overspray, and trace contamination causes fish-eye craters and adhesion failures that are difficult to trace. Segregate silicone moulding areas from finishing operations, keep tools, rags and protective equipment separate, and control airflow between the two.

Yes. Water-carried silicone emulsions substantially reduce volatile organic compound emissions and flammability compared with solvent-carried products, which matters in enclosed workshops and where emissions are regulated. They need the mould to be warm enough to flash the water off and take a little longer to prepare, but the silicone deposited and its release performance are comparable. The transfer and paintability limitations are unchanged.

Yes, for food production and packaging applications, carrying the appropriate registration such as NSF H1 for incidental contact. As with all food-grade lubricants, registration governs the permitted ingredients rather than performance, so temperature range and release behaviour still have to be checked separately. Store food-grade products separately from general workshop products so that the correct can is picked up in a production area.