E-Catalog > O Ring And Sealing part :O-Ring,V-Packing,Oil seal,V-Ring,Piston And Rod > O-Ring NBR 70 Sh A,90 Sh A โอริงเอ็นบีอาร์
Product Information :
- ยาง และพลาสติก
- O Ring And Sealing part :O-Ring,V-Packing,Oil seal,V-Ring,Piston And Rod
- เครื่องมือ, เครื่องจักรและอุปกรณ์
- บริการ
- วัตถุดิบ
- สินค้า, ผลิตภัณฑ์
Product Detail :
สอบถามรายละเอียดเกียวกับสินค้าหรือขอข้อมูลเพิ่มเติม ติดต่อบริษัทฯ โดยตรง
For more information about the product or request additional information. Contact the company directly at Tel.+66 (0) 2363-7582, +066 (0) 2363-7693
Basic elastomers for O-Rings
The following paragraph briefly reviews various elastomers currently available for use in O-Rings and other seals.
NBR (Acrylonitrile-Butadiene Rubber):
Acrylonitrile-butadiene or nitrile rubbers are copolymers of butadiene and acrylonitrile. The acrylonitrile content of these compounds varies considerably - from 18% to 50% - and influences the physical properties of the finished material. As the acrylonitrile content is increased the following changes in the
vulcanizate properties occur:
• Resistance to petroleum-based fluids and hydrocarbon fuels increases
• Low-temperature flexibility decreases
• Rebound resilience decreases
• Compression set decreases
• Gas permeability decreases
• Heat resistance improves
• Ozone resistance improves
• Abrasion resistance improves
• Tensile strength increases
• Hardness increases
• Density increases
The standard NBR compounds have a medium content of ACN (33%) and are a compromise betweenthe opposing properties of the material. In comparison with other elastomers NBR has good mechanicalproperties and high wear resistance. NBR is not resistant to weathering and ozone. NBR vulcanizatesare the most widely used elastomers for sealing applications because NBR is resistant to a wide rangeof petroleum-based greases and fluids, vegetable and animal oils, silicone greases and oils, water andaqueous solutions of non oxidizing chemicals. Specially formulated compounds extend the range ofapplications in which NBR can be used. The operating temperatures range between -30‹C and +108‹C.
TABLE 1: MAIN CHARACTERISTICS NBR – N70N00L | |||
NBR-N70N00L | |||
TRADE MANE | TEMPERATURE RANGE | CHEMICALL RESISTANCE | APPLICATIONS |
NITRILE:BUNA N®, PERBUNAN®, CHEMIGUM® | -30 / +108°C | HYDRAULIC AND LUBRICATING OILS, ANIMAL AND VEGETABLE OILS, ALIPHATIC HYDROCARBONS: (LPG GASES, BUTANE, PROPANE, PETROLEUM OIL, PETROL, KEROSENE, DIESEL FUELS) WATER | HYDRAULIC OILS,VEGETABLES OILS, ANIMAL FATS, ACETYLENE, ALCOHOLS, WATER, AIR, FUELS |
NOT COMPATIBLE WITH: | |||
AROMATIC HYDROCARBONS (BENZENE), CHLORINATED HYDROCARBONS (TRICHLOROETHYLENE), POPAR SOLVENTS (KETONE, ACETONE, ACETIC ACID), STRONG ACIDS, BRAKE FLUID, OZONE, WEATHER AND ATMOSPERIC AGING |