What are Buna O-rings used for?
Buna O-Rings (NBR, Nitrile) Buna seals are standard in most pumps and work well for most cleaning and fluid pressurizing applications. This form of synthetic rubber is generally chemical-resistant, standing up to oil, fuel, and other harsh compounds.
Which is better Viton or Buna?
While both Viton and Buna seals both serve as great sealing options at moderate temperatures, Viton is far superior to Buna for high temperature applications. Viton seals provide an indefinite seal for temperatures up to 400°F, and for temperatures up to 600°F they offer an excellent seal for more than 48 hours.
Are Buna O-rings good for gasoline?
Buna O-rings, also known as nitrile or NBR O-rings, offer excellent sealing and mechanical properties at a low cost. Buna O-rings have resistance to common lubricants and are recommended for crude oil, gasoline, propane, petroleum oils and water.
What are O ring washers used for?
A rubber washer is a rubber ring used to create a seal between parts, thus eliminating vibration and reducing noise.
What is the difference between Buna and Viton o rings?
Viton is the choice over Buna for high-temperature applications. Viton seals hold indefinitely at temperatures up to 400°F and can last up to 48 hours at temperatures up to 600°F. Buna is effective to 250°F. Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids.
Are Viton o rings better?
Crucial Differences While both materials are suitable for moderate temperature applications, Viton® is the superior choice for high temperatures. Viton® standard compounds can withstand temperatures up to 446℉, while Buna o-rings can only handle up to 257℉.
What is the difference between black o rings and green o rings?
Black o rings are primarily neoprene or Nitrile or, in some cases, a mix of the two materials. Black o rings are most commonly used for auto air conditioning applications. Green o rings are hydrogenated Nitrile, also known as highly saturated Nitrile, or more commonly known as HNBR.
Is diesel safe for o rings?
From my service manual: “Use only kerosene or diesel oil for cleaning an O-ring drive chain. Any other cleaning solution such as gasoline or trichloroethylene will cause deterioration and swelling of the O-rings.” OK, when they say “diesel oil” to clean the chain, they mean “diesel fuel”.
What is the difference between black O rings and green O rings?
What’s the difference between Nitrile and Viton o rings?
You’ll find nitrile o rings used in many applications, including where oil resistance is needed or where low temperature functionality is required. As well as resisting oils, petrol and hydrocarbons, Viton™ is resistant to mineral acids, halogenated hydrocarbons and more.
Why is nitrile used in Buna O rings?
Nitrile O-Rings » NBR O-Rings and Buna O-Rings Nitrile is the most widely used elastomer in the seal industry, and commonly used in o-ring and sealing applications. The popularity of nitrile is due to its excellent resistance to petroleum products and its ability to be compounded for service over a temperature range of -22°F to 212°F.
How is Buna used in the seal industry?
Buna is a widely used elastomeric material known for its tensile strength and high fuel and oil resistant properties. It combines resistance with low compression set and high abrasion resistance to make it the seal industry’s most widely used economical elastomer.
What’s the difference between Buna and Viton O rings?
Buna, also referred to as Nitrile or Buna-N, is an NBR rubber that displays excellent resistance to all petroleum-based oils and fuels, as well as water, various alcohols, silicone greases, and hydraulic fluids. It offers such other advantages as good tear resistance and non-polar solvent resistance.
Why are the NBR properties of Buna good?
This is partly because it displays excellent resistance to petroleum-based oils, fuels, water, alcohols, silicone greases, hydraulic fluids. However, it also has a good balance of desirable working properties like low compression set, high abrasion resistance and high tensile strength.