The role of o-ring is to seal and ensure the closed performance of the cylinder and other containers.
O-ring (O-rings) is a kind of cross-section for the round rubber sealing ring, because of its cross-section for the O-shaped, so it is called O-ring sealing ring, also called O-ring. Began to appear in the middle of the 19th century, when it was used as a steam engine cylinder o-ring role is the element.
O-ring specifications ? O-ring specifications are mainly UHSO ring specifications, UHP O-ring specifications, UN O-ring specifications, DHO ring specifications, piston rod O-ring specifications, high-temperature O-ring, high-pressure O-ring, corrosion-resistant O-ring, wear-resistant O-ring.
O-ring application introduction: ? YX type O-ring for hole ? Product Use: Used for sealing the piston in reciprocating motion hydraulic cylinders.
Scope of application: TPU: general hydraulic cylinder, general equipment hydraulic cylinder.
CPU: hydraulic cylinder for construction machinery and high temperature, high pressure cylinder.
Material: polyurethane TPU, CPU, rubber. ? Product hardness: HS85±2°A Working temperature: TPU: - 40～+80℃, CPU: -40～+120℃ Working pressure: ≤32Mpa Working medium: hydraulic oil, emulsion.
YX-type hole retaining O-ring ? Product use: This standard applies to the cylinder working pressure greater than 16MPa with YX-type sealing ring, or cylinder eccentric force, to protect the sealing ring role. Working temperature: -40 ~ +100 degrees. Working medium: hydraulic oil, emulsion, water Product hardness: HS 92 ± 5A Material: PTFE.
YX type O-ring for shaft ? Product use: for reciprocating motion hydraulic cylinders in the piston rod sealing Scope of application: TPU: general hydraulic cylinders, general equipment hydraulic cylinders.
CPU: hydraulic cylinder for construction machinery and high temperature, high pressure cylinder. Material: polyurethane TPU, CPU, rubber Product hardness: HS85 ± 2 ° A Operating temperature: TPU: - 40 ~ +80 ℃ CPU: -40 ~ +120 ℃ Working pressure: ≤ 32Mpa, working medium: hydraulic oil, emulsion.
O-ring sealing performance is excellent, high working life, dynamic pressure sealing working life than conventional rubber sealing products 5-10 times higher, up to tens of times, under certain conditions can be the same life with the sealing substrate.
O-ring friction resistance is small, dynamic and static friction is equal, is "0" shaped rubber ring friction 1/2-1/4, can eliminate low-speed, low-pressure movement under the phenomenon of "crawling".
O-ring is highly wear-resistant and has automatic elastic compensation function after the sealing surface is worn.
O-ring good self-lubricating properties. Can be used as oil-free lubrication seal.
2. O-ring scope of application
O-ring is suitable for mounted on a variety of mechanical equipment, in the specified temperature, pressure, and different liquid and gas media, in static or motion state to play a sealing role.
In machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, construction machinery, construction machinery, mining machinery, petroleum machinery, plastics machinery, agricultural machinery, as well as various types of instruments and meters, a large number of applications of various types of sealing elements.
O-ring is mainly used for static sealing and reciprocating motion seal. Used for rotary motion seal, limited to low-speed rotary sealing device. o-ring is generally installed in the outer circle or inner circle on the cross-section of the rectangular groove to play a sealing role.
O-ring in the oil, acid and alkali, grinding, chemical erosion and other environments still play a good sealing, vibration damping effect. Therefore, O-ring is the hydraulic and pneumatic transmission system is the most widely used in a seal.
3. Advantages of O-ring
O-ring has the following advantages compared with other types of seals: ? --Suitable for a variety of sealing forms: static sealing, dynamic sealing ? Suitable for a variety of uses material, size and groove have been standardized, interchangeability ?
--Suitable for a wide range of motions: rotary, axial reciprocating or combined (e.g. rotary reciprocating combined motion).
--Suitable for a wide range of different sealing media: oil, water, gas, chemical or other mixed media ? Effective sealing action against oil, water, air, gas and a variety of chemical media is achieved through the selection of suitable rubber materials and appropriate formulation design.
Wide temperature range (- 60 ℃ ~ + 220 ℃), fixed use of pressure up to 1500Kg/cm2 ( and reinforcement ring and use ).
Because the O-ring itself and the structure of the mounting part are extremely simple and have been standardized, so it is very easy to install and replace.
--Many varieties of materials ? Can be selected according to different fluids: Nitrile Rubber (NBR), Fluorine Rubber (FKM), Silicone Rubber (VMQ), Ethylene-Propylene Rubber (EPDM), Chloroprene Rubber (CR), Butyl Rubber (BU), Polytetrafluoroethylene (PTFE), Natural Rubber (NR), etc. ? --Low cost ? --Dynamic friction resistance is relatively small.