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Q:Can I use this for oil pressure switch work?
A:I'm happy to help, RJ! I recommend following what your repair manual indicates is the correct product for the application. For many applications a silicone sealant is the correct product, in which case this product will work for the job. It may be much more than you need though, there are smaller sizes available which may make it easier to apply. Such as Part No. 80050.
Q:Will permatex clear RTV silicone adhesive prevent arcing in wires from + to - if used on wire ends?
A:This Permatex Clear RTV Silicone Adhesive Sealant - part# 85913 is designed for indoor and outdoor use. It seals, bonds, repairs, mends and secures glass, metal, plastics, fabric, vinyl and weather-stripping and vinyl tops. The sealant also protects and repairs electrical wiring and may be applied to horizontal or vertical surfaces. The sealant is waterproof and flexible and can handle temperatures ranging from -75°F to 400°F. The sealant resists oil, water, weather, vibration and grease.
A:Silicone in general is electrically resistive, but this isn't really the right product for that purpose. It is similar to what some spark plug wires are shielded with (outer coat), but I've seen cheap wires arc to the engine block, so there is only so much silicone can handle.