Differbetween
NBR is an abbreviation of nitrile rubber while HNBR is the hydrogenated form of nitrile rubber. The key difference between NBR and HNBR is that NBR is a non-hydrogenated form, whereas HNBR is a hydrogenated form. Moreover, NBR has a comparatively low tensile strength compared to HNBR.
- What is HNBR material?
- What is an HNBR O ring?
- Are HNBR O rings fuel resistant?
- What is hydrogenated nitrile?
- What is the full form of NBR?
- What material is FKM?
- What is the difference between black O rings and green O rings?
- What is the best lubricant for O rings?
- What are the best O rings?
- Are black O-rings gas resistant?
- Why are AC O-rings green?
- What are green O-rings used for?
What is HNBR material?
When high temperature conditions require high tensile strength and resistance, one elastomer comes to mind: Hydrogenated Nitrile Butadiene Rubber (HNBR). ... NBR polymers are filled with double and triple bonds in the polymer chain. The bonds are broken and replaced with hydrogen, and result in a high-performance material.
What is an HNBR O ring?
HNBR o-rings are made from hydrogenated nitrile specifically designed to provide superior temperature and fuel resistance compared to traditional NBR materials. HBNR o-rings also feature excellent abrasion, wear, and compression set resistance, making them a reliable o-ring in a wide range of tough applications.
Are HNBR O rings fuel resistant?
HNBR applications
HNBR is resistant to mineral oil-based hydraulic fluids, animal and vegetable fats, diesel fuel, ozone, sour gas, dilute acids and bases.
What is hydrogenated nitrile?
Hydrogenated Nitrile Rubber (HNBR) properties depend upon the acrylonitrile content and the degree of hydrogenation of the butadiene copolymer. They have rather better oil and chemical resistance than Nitrile Rubber and can withstand much higher temperatures.
What is the full form of NBR?
Nitrile rubber (NBR), also called nitrile-butadiene rubber, an oil-resistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene.
What material is FKM?
FKM is the ASTM designation for a class of fluorinated, carbon-based synthetic rubber, commonly known as fluoroelastomer. FKM has impressive heat resistance, allowing FKM seals to withstand temperatures greater than 200°C.
What is the difference between black O rings and green O rings?
The black o-rings are most likely neoprene or NBR (nitrile) rubber. These elastomers were most often used/specified for auto air conditioning and Freon 12. The green colored o-rings are most likely HNBR or hydrogenated nitrile rubber. They were introduced with the change to 134a refrigerant.
What is the best lubricant for O rings?
Super Lube O-Ring Silicone Grease is a non-curing silicone compound that is ideal for lubricating, sealing and conditioning O-rings and other regulator and valve system components. It is waterproof and protects against moisture and oxidation.
What are the best O rings?
O-ring material comparison
- Viton® O-rings. Viton® is an all-round material capable of handling a diverse array of applications, particularly sealing jobs involving movement. ...
- Nitrile (Buna-N) O-rings. ...
- Neoprene O-rings. ...
- Silicone O-rings. ...
- Ethylene Propylene Rubber (EPR) O-rings. ...
- PTFE O-rings. ...
- Polyurethane O-rings.
Are black O-rings gas resistant?
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. ... A common Parker nitrile O-ring compound is N0674 Black.
Why are AC O-rings green?
The green O-Rings are Highly Saturated Nitrile (also known as Hydrogenated Nitrile) and are commonly referred to as HNBR or, in some cases, HSN. In either case, the green color is molded into the rubber.
What are green O-rings used for?
Green O-ring made of FKM is studied to grant high temperature and intense working stress. It's ideal for solar systems.
