06/12/2016· HNBR elastomers are changing the game for sealing and manufacturing companies. Made from hydrogenating acrylonitrile butadiene rubber (NBR), the compound meets higher temperatures, retains better resistance and has become widely known for its physical strength. HNBR results in higher strength, heat and oil resistance, and better ozone
an emulsion-polymerized NBR. This polymer is then dissolved in an appropriate solvent. After the dissolution process is complete, the addition of hydrogen gas, in conjunction with a precious metal alyst at a designated temperature and pressure, brings about a selective hydrogenation to produce HNBR. The nitrile groups are unaffected during the
impacting fuel cell use. Take-away messages from stakeholder survey: Wide range of suggested polymers Conditions of Interest: -40 to +85 degrees C. NBR/HNBR, Viton, Levapren: Thermosetting polymers ofInterest: Epoxy, PI, NBR, Polyurethane: Tests …
10/05/2019· HNBR Seals have enhanced resistance to environments that are prone to ozone and weathering, industrial lubricants, amine-based corrosion inhibitors, sour gases (H 2 S), and hot water/steam (150°C). 2. Maximum operating temperature +56°F (180ºC) in oil +320°F (160ºC) in air. 3. Minimum operating temperature -25ºF (-26°C) special grades
30/05/2020· Both NBR rubber and HNBR rubber are thermoset elastomers (rubber). There are 6 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. For each property being compared, the top bar is NBR rubber and the bottom bar is HNBR rubber. Acrylonitrile (Nitrile) Butadiene Rubber
MegaPressG fittings, with an HNBR sealing element, are available in sizes 1/2" to 4" and are perfect for a variety of oil and fuel gas appliions. Designed for Iron Pipe Size (IPS) stainless steel, Viega MegaPress Stainless fittings are available in 304 and 316 stainless steel. With the …
05/02/2016· N1173-70, N1231-80 and KB163-90 are sealing compounds made from hydrogenated nitrile, a synthetic polymer that results from the hydrogenation of nitrile rubber (NBR). The hydrogenation process gives HNBR materials enhanced thermal stability (up to 149°C/300°F, with short periods at higher temperatures). HNBR materials also possess …
01/05/2020· Silicone can resist intermittent temperatures of up to 230°C, or up to 280°C if a heat stabiliser is added into the raw material. HNBR has excellent tensile strength and good abrasion resistance, whereas silicone has good tensile strength, but poor abrasion resistance. For dynamic appliions with friction, HNBR would most likely be a better
Hydrogenated Nitrile Butadiene Rubber - HNBR. HNBR is made via selective hydrogenation of the NBR butadiene groups which improves the temperature and ozone resistance considerably. HNBR is widely known for its physical strength and retention of properties after long-term exposure to heat, oil, and chemicals.
HNBR is -50 to 320°F (-46 to 160°C).2 This is 70°F (39°C) hotter than the typically quoted maximum continuous operating temperature of NBR. HNBR has a good overall balance of characteristics (chemical, abrasion, compression set resistance, etc.) for typical oilfield drilling service, and is widely used in that industry. 2.
Nitrile rubber (NBR) is an oil-resistant synthetic rubber and a copolymer. The monomers used to produce nitrile are acrylonitrile and butadiene. Nitrile is often used in gaskets, hoses and appliions which require oil-resistant properties. Common exposure to gas, oil and other typically harmful liquids and chemicals, make nitrile a hard to
Answer (1 of 2): Acrylonitrile Butadiene Rubber (NBR), usually shortened to Nitrile, was developed in 1941 as the first oil resistant rubber. Grades with high acrylonitrile content have better oil resistance whereas low acrylonitrile content gives better …
HNBR appliions. HNBR is resistant to mineral oil-based hydraulic fluids, animal and vegetable fats, diesel fuel, ozone, sour gas, dilute acids and bases. HNBR also resists new bio-oils (biological oils). HNBR is suitable for high dynamic loads and has a good abrasion resistance. HNBR is suitable for temperatures from -30°C to +150°C (-20
HNBR O-ring meets higher temperatures than standard NBR. The HNBR O-ring has recently been developed to meet higher temperatures than standard NBR while retaining resistance to petroleum based oils. The HNBR O-ring has a temperature range from -30°C to +150°C ( …
For assistance in identifying the appropriate polymer or material, or to develop and formulate an HNBR rubber compound to meet your specific appliion and performance requirements, please contact Rahco Rubber, Inc. at [email protected] or 847-298-4200. Rahco Rubber, Inc. makes no expressed or implied warranty as to any qualities
1. NBR pipe has excellent resistance to water vapor penetration, moisture resistance μ≥5,000, it is both an insulation layer and a moisture-proof layer; 2. Good fire performance, oxygen index above 32; 3. It does not contain CFC, HFC, or HCFC, and other fluorocarbon materials. It does not contain formaldehyde, dust, and fiber;
resistance properties. In this HNBR material data sheet, you can find HNBR material properties and material compatibility. HNBR material properties HNBR, even at raised temperature, has great mechanical properties. This elastomer is both hot air and steam resistant whilst simultaneously having a very good low-temperature flexibility.
More About HNBR. HNBR is a hydrogenated version of NBR (nitrile) rubber, a copolymer of ACN and 1,3-butadiene. It has better performance than NBR, as in the case of HNBR, the NBR is hydrogenated in a alytic hydrogenation process. HNBR is widely known for its physical strength and retention of properties after long-term exposure to heat, oil
industrial appliions, HNBR o-rings have been used for heat exchanger gaskets, blow-out preventers, and paper mill rolls. HNBR is a more specialized version of NBR created by dissolving emulsion-polymerized NBR into the appropriate solvent. Hydrogen gas is then introduced into the mixture utilizing a precious metal as a alyst.
Color - green. H-NBR is an elastomer based on hydrogenated acrylonitrile-butadiene rubber, which can be used in aliphatic hydrocarbon (i.e. propane, butane) and mineral oils and lubricants (short time up to 170°C), also for raw petroleum which contains hydrogen sulfide. H-NBR also can be used in diluted acids and alkali, saline, even at high
NBR-HNBR XNBR; NBR . Common name: NBR or nitrile rubber. Common chemical composition: Butadiene-acrylonitrile copolymer (with an ACM content ranging from 18% to 50%) Fields of appliion . NBR is mainly used for products in the automotive industry. For example, for the production of fuel supply pipes, throttle support plates, oil and heat
General NBR grades are capable from -30°C (-22°F) to +100°C (212°F) with HNBR increasing to +150°C (300°F). Through adjustment of the ACN level, capabilities as low as -60°C (-76°F) or up to +160°C (320°F) can be achieved (but not in the same compound).
28/12/2018· Put one o-ring in the jar of gasoline and put the other same size o-ring in a plastic bag and label it. One week later take the HNBR o-ring out of the gasoline and compare it with the one in the plastic bag. The untouched HNBR o-ring in the plastic bag will have magically shrunk. C.
Unlike NBR, the copolymer is subsequently hydrogenated to increase saturation of the butadiene component. NBR and HNBR are primarily graded by their acrylonitrile content. By varying the ratio of ACN and butadiene, different properties are obtained. How this ratio affects HNBR behavior in CO2 was the question addressed by this study.
18/06/2020· Nitrile rubber, also known as NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene. Although its physical and chemical properties vary depending on the polymer’s composition of nitrile, this particular type of synthetic rubber is unusual in being generally resistant to oil, fuel
Features. Hydrogenated Nitrile is widely used in automotive and oil industries and maintains excellent resistance to motor oils, sour gas, amine/oil mixtures, oxidized fuels, and lubriing oils. HNBR is resistant to mineral oil-based hydraulic fluids, animal and vegetable fats, diesel fuel, ozone, sour gas, dilute acids and bases.