Acetate silicones are elastic, acid-based seals that cure quickly and give off a vinegar-like odour. They are ideal for smooth surfaces such as glass and ceramics, but are not recommended for metals that corrode. High-temperature and oil-resistant RTV silicones. The available colours are black, red and clear.
Oxime silicones are a type of neutral silicone seal which, upon curing, release chemical compounds known as oximes. They combine excellent adhesion, elasticity and chemical neutrality, making them preferable to acid (acetic) silicones for use with sensitive materials, such as sensors and transducers in motor vehicles. Oxime silicones are significantly more oil-resistant and better suited to temperature stresses in aggressive environments than the widely used acetate (acidic) silicones. It is for this very reason that they are the industry standard for automotive gaskets and engine seals. They are available in black, grey, blue and copper.