Rubber gaskets are usually made of NBR (nitrile nitrile), SBR (styrene-butadiene rubber), HNBR (hydrogenated nitrile rubber), EPDM (ethylene propylene diene), SILICONE (silica gel), VITON (fluorine gel), CR ( Neoprene), FFKM (perfluoro rubber), etc.
The material of the rubber gasket is the most common in the use of NBR nitrile rubber, and its cost performance is the highest. The use of FFKM perfluororubber gaskets is generally used in more advanced fields such as space rockets. Because its price is quite expensive, its performance is superior and can exceed many metal materials.
Undermount sinks are sinks installed under the surface of a worktop with a cut out made to the size of the bowl. It is not common for an undermount sink to come with a draining board but rather the idea is that water can be wiped towards the sink. The kitchen tap is installed separately unlike an inset sink and in the case of granite worktops, has a radial cut out to suit the shape of the sink. They are known as a modern kitchen design and are starting to appear more often.
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