ceiling mounted access panels
The mating surfaces of the head or block must be perfectly clean, flat and smooth.
Polyacrylate
Better heat, oil and chemical resistance than NBR
It is recommended for use in oil which contains load bearing additives such as EP gear oils
Meanwhile, rubber-cased oil seals are used under conditions where a metal-cased seal can fail (for example, because of thermal expansion). Unlike the metal-cased type, these seals do not rust. Moreover, they can seal a lightly damaged housing better than metal-covered seals since, in high temperatures, rubber can provide a more stable sealability.

oil valve cover gasket. It is important to ensure that the gasket is installed correctly and that the valve cover is tightened to the manufacturer's specifications to prevent leaks.
ISO 6194-1 1)
Clean, smelly, tasteless

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