is from Yiho Polytek,which is a technology production enterprise integrating R&D, production and sales. It owns professional production plants and branches, and is mainly engaged in the research, manufacture and sales of seals in various industries. Its products are exported to overseas markets such as Asia, Europe, United States, Middle East and etc.
• They seal over a wide range of pressure, temperature and tolerance.
• Ease of service, no smearing or retightening.
• No critical torque on tightening, therefore unlikely to cause structural damage.
• Rubber O-rings normally require very little room and are light in weight.
• In many cases an O-ring can be reused, an advantage over non-elastic fl at seals and crush-type rubber gaskets.
• The duration of life in the correct application corresponds to the normal aging period of the O-ring material.
• When rubber seals failures,it is normally gradual and easily identified.
• Where differing amounts of compression effect the seal function (as with fl at gaskets), an buna rings is not effected because metal to metal contact is generally allowed for.
• They are cost-effective.It can save your cost refer to other rings with different material.
high abrasion resistance,low gas
permeability and good resistance to mineral oil based lubricating oils and greases,
hydraulic oils,highly non-flammable hydraulic fluids HFA,HFB,HFC,silicone oils and
greases,water up to approx.80°C.NBR is generally not resistant to polar solvents,
glycol-based brake fluids and highly non-flammable hydraulic fluids HFD.It has a low
resistance to ozone ,weathering and ageing.
In most hydraulic applications this has no effect because the hydraulic seals are installed
internally in the hydraulic components.
Application:NBR is frequently used in the hydraulic field due to its good mechanical
characteristics and resistance to mineral oil based lubricating oils and greases.
a. Material inspection:
Testing for all raw materials before storage, and provide the raw material of relevant reports, report and raw material properties with comparison, two of reported values, can storage.
b. Mold Inspection:
Die Mold development finished or after cleaning ,we will check the full size of the mold ,ensure quality for each cavity's product.
c. Product Inspection:
During production ,Inspectors will check semi-finished products , ensure product process and make the defective rate control in a reasonable range.
d. Quality Control:
Quality Department will check product appearance for each batch.
e. Product Full Inspection:
Optical Sorting Machine ensure products appearance ,Size 100% qualified.
Having been engaged in manufacturing various quality rubber products since 1994, Yiho Polytek is now well-known as one of the leading manufacturers of buna n rubber rings size in China. If you are going to buy durable and flexible buna n rubber rings size, please feel free to contact our factory, which can also offer you customized service.