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Silicones
Silicones have their own category: RTV silicone sealants and adhesives, encapsulants and potting compounds, mould-making silicones, silicone fluids and oils, and silicone greases and compounds. Most products are from Momentive (including RTV 106), alongside Dow, Wacker and Loctite. MABAYCO is an authorised distributor for Momentive. Silicones stay flexible across a wide temperature range and are used in engine bays, electrical and electronic assemblies, gaskets and protective coatings. In aerospace, selection usually follows specifications such as MIL-A-46106 (general-purpose RTV) and MIL-A-46146 (non-corrosive RTV for electronics) or OEM documentation. TDS and SDS are on each product page.
Authorised distributorship: Momentive
Can't find the silicone you need? Send us the product code or specification. Ask MABAYCO first.
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Questions we are asked most
What is the difference between acetoxy and neutral-cure RTV?
Acetoxy RTV releases acetic acid as it cures (vinegar smell); it cures fast and bonds well but can corrode copper and sensitive electronics. Neutral-cure (oxime or alkoxy) products of the MIL-A-46146 type are preferred on electronics and metals.
How long does RTV take to cure?
One-part RTV cures from the surface inwards with atmospheric moisture. The surface skins quickly; full cure depends on thickness and humidity and usually takes longer than 24 hours. Exact values are in the TDS.
Can paint or other sealants be applied over cured silicone?
Paint and most sealants do not adhere to cured silicone, and silicone residue can cause adhesion problems later. Follow the maintenance documentation in areas to be painted.