Viton is a brand of synthetic rubber and fluoropolymer elastomer commonly used in O-rings and other molded extruded goods. It offers excellent resistance to chemicals and superior strength, but those properties could be compromised by high temperature ranges and prolonged UV exposure.Ĭommon commercial applications where Buna seals are used include carpet extractors, pressure washers, marine dock sprayers, misters, and hydrostatic testing. This form of synthetic rubber is generally chemical-resistant, standing up to oil, fuel, and other harsh compounds.Īs a rule of thumb, the more Nitrile within the polymer, the higher the strength and resistance to oils, acids, and other chemicals, but these benefits are contrasted with lower flexibility of the material. Buna O-Rings (NBR, Nitrile)īuna seals are standard in most pumps and work well for most cleaning and fluid pressurizing applications. Let’s break down the difference between Buna and Viton elastomer materials and the role each plays in your pump’s performance. Knowing which sealing option is right for your pump requires identifying your specific application and intended use. These types of elastomers are synthetic rubber parts in a pump that help prevent leakage and are critical to the durability and long-term success of a pump system. Whether to use Buna or Viton elastomers - often referred to as O-rings, seals, or gaskets - isn’t always an easy choice.
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