Table of Contents
ToggleThe Ultimate Guide to O-Rings
What is an O-ring?
The O-ring is a circular rubber ring made of rubber. The function of the O-ring is mainly used for sealing mechanical equipment and as a gasket.
O-ring type
There is usually only one type of O-ring, which is differentiated in size according to different sizes, but it can be divided into 10 types according to materials and other types.
Nitrile O-ring
Nitrile O-rings, also known as nbr O-rings, are vulcanized from nitrile rubber and are mainly used in environments with temperatures within 120°C. Nitrile is also the cheapest and most widely used O-ring, with a huge amount of use. Automotive air conditioner O-rings, bearing gaskets, and various mechanical equipment require it. Commonly used nitrile rubber has a hardness of 70, and some have a hardness of 90. Nitrile is mainly black.
Silicone O-ring
Silicone O-rings are mainly made of silicone. Silicone is relatively soft. Silicone has better temperature and oil resistance than nitrile. Silicone seals better because it is soft, but the cost is also higher than nitrile. The hardness of silicone can be lower than 70 hardness. , 40 and 50 hardness are also available.
Fluorine rubber O-ring
Fluorine rubber O-rings are mainly made of fluorine rubber, also known as FKM and Viton O-rings. The biggest feature of fluorine rubber is high temperature resistance and wear resistance, because it can operate at a temperature of 220°C, and the maximum instantaneous temperature can reach 250℃, fluorine rubber is mainly used in high temperature environments, and is widely used in steel plants and power plants.
EPDM O-ring
EPDM O-rings are mainly made of EPDM. Its most important feature is water vapor resistance, and they are widely used in electrical equipment.
Polyurethane O-ring
Polyurethane O-rings, also called PU O rings, mainly use 90 hardness rubber. Polyurethane O-rings have good wear resistance and oil resistance, and have very good tear resistance. They are used in oil pumps, hydraulic rods, and automobile gearboxes. Widely used.
Perfluoroether O-ring
Perfluoroether O-rings are high-end products. Of course, the requirements for use characteristics are also very high. They can be used at high temperatures of 330°C and can withstand 98% concentrated sulfuric acid. They have relatively high advantages in other aspects.
O-ring repair box
o ring repair kit,There are also O-ring kit. Commonly used models are mainly packed in the box to meet the needs of repair shops. For example, parts of automobiles and excavators need to be replaced, and the O-ring repair box just matches.
o ring washer
O-ring gaskets are the same as O-rings. O-rings are also called gaskets, but they also derive many other types, such as square and round gaskets. They are also widely used in various industries, such as common waterproofing Gaskets and water cup gaskets also belong to the same type.
O-ring seal
O-ring seals, O-rings have a sealing function, so they are also called O-ring seals.
O-ring price
The price of O-rings varies greatly. The cheapest O-ring is less than 0.01, and the expensive one costs about 100RMB. The price varies depending on the model and size, but there is no doubt that O-ring is indeed the most widely used and cheapest seal. , In aerospace, mechanical processing plays an important role.
Leave A Comment