Sealing Substance

Engine silicone sealants are designed for sealing oil pans, valve covers, thermostat housings and other engine mating surfaces — this category offers 32 products for various applications.

• Application area: choose a sealant specifically rated for oil pan or valve cover use, not a general-purpose silicone.
• Temperature resistance: check the maximum operating temperature to ensure it matches the demands of the engine component.
• Material compatibility: the sealant must resist engine oil and coolant contact without damaging gaskets or plastic components nearby.
• Cure time: curing times vary between products — always check the manufacturer's instructions before starting the engine.
• Pack size: smaller tubes suit one-off repairs; larger packs offer better value for regular use.

Which sealant should be used for an oil pan or valve cover? Use a high-temperature silicone sealant specifically labelled for engine use and oil resistance — general household silicones are not suitable for this purpose.

Can different engine sealants be mixed or layered? Mixing or layering different sealants is not recommended. Always remove old sealant residue thoroughly before applying a new product to the mating surface.

How long should engine silicone cure before starting the engine? Most manufacturers recommend waiting at least 30–60 minutes, but always follow the specific product instructions on the packaging.

PartStall.ee stocks engine silicone sealants with delivery across Estonia. Contact us if you need help selecting the right product for your application.