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What is NBR 70 O-ring?

What is NBR 70 O-ring?

Nitrile 70 metric o-rings offer excellent resistance to petroleum products. They can also be compounded for service over a temperature range of -40°C to 135°C. Special Nitrile compounds offer temperature ranges of -55°C to 135°C (Dry Heat Only). Nitrile o-rings are commonly referred to as a Buna o-ring, or NBR o-rings.

What is NBR O-ring material?

NBR (Nitrile), chemically, is a copolymer of butadiene and acrylonitrile. Acrylonitrile content varies in commercial products from 18% to 50%. As the NBR content increases, resistance to petroleum base oils and hydrocarbon fuels increases, but low temperature flexibility decreases.

What is the difference between NBR 70 and NBR 90?

The Nitrile 90 durometer material is a harder rubber compared to the Nitrile 70. Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Nitrile is generally not resistant to weathering, sunlight and ozone unless they are specially compounded.

Can NBR O-rings be used with any refrigerant?

Standard O-rings are NBR (also called Nitrile Rubber, Buna-N, or just Buna). Although they are used in many automotive applications, Viton O-rings are NOT compatible with refrigerants. You won’t find them in any OEM AC system and you should never use it for replacements.

Is NBR oil resistant?

nitrile rubber (NBR), also called nitrile-butadiene rubber, an oil-resistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required.

Is NBR the same as Buna-N?

Nitrile rubber — also known as acrylonitrile butadiene rubber, NBR, or Buna-N — is a synthetically produced, petroleum-based rubber ideal for seals, gaskets and o-rings. Nitrile is a highly versatile rubber. It is used in countless applications and products, from marine fuel systems to small engine carburetors.

Is NBR a silicone?

Acrylonitrile-butadiene, commonly known as nitrile or NBR, has excellent chemical resistance, similar to silicone….Silicone vs Nitrile.

NBR Silicone
Great compression set Excellent compression set
Poor weather resistance Excellent weather resistance

Is NBR suitable for sea water?

NBR can be used in drinking water applications, but only has an average resistance to chlorinated water.

What do the different color O-rings mean?

Ultimately, different o ring colours are used to help differentiate between different materials. Specialist Sealing Products can supply a range of o rings in all colours, utilising a range of materials.

What are green O-rings for?

Green O-ring made of FKM is studied to grant high temperature and intense working stress. It’s ideal for solar systems.

Is NBR Polar?

NBR is a polar polymer and shows superior compatibility with resins as compared to other elastomers.

Is NBR the same as nitrile?

Nitrile rubber, also known as NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.

What is black NBR O ring?

Black NBR O ring, also known as a Nitrile o-ring or Buna-N O’Rings most widely used elastomer in the seal industry today. NBR is a standard material for Hydraulics and Pneumatic.

What is NBR/nitrile O-ring?

NBR is a standard material for Hydraulics and Pneumatic. NBR / Nitrile O-Rings resists oil-based hydraulic fluids, fats and oils.

What are Buna-N O-rings?

Buna-N O-Rings / Nitrile O-Rings / NBR: Buna-N O-Rings are the most widely used o-ring material in the world because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, propane, natural gas and the default choice for basic applications.

What is NBR rubber made of?

Parker’s Nitrile rubber (NBR) is the general term for acrylonitrile butadiene copolymer. The acrylonitrile content of nitrile sealing compounds varies considerably (18% to 50%) and influences the physical properties of the finished material.

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