O-Ring is a circular section of the rubber seal ring, because its section is O-shaped, it is called O-ring, also known as O-ring. began to appear in the 19th century century, when it was used as a seal for the steam engine cylinder.
The O-ring is suitable for loading on a variety of mechanical equipment, in the specified temperature, pressure, and different liquids and gas medium, Molded O Ring in the static or moving state of the sealing effect. In Machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, engineering machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various types of instrumentation, a large number of applications of various types of sealing elements. O-rings are mainly used for static seals and reciprocating motion seals. For rotating motion seals, Molded O Ring it is limited to low-speed rotary seals. O-ring is generally installed in the outer circle or the inner circle with a rectangular groove inside the trench sealing effect. O-Ring in the oil-resistant, acid-base, grinding, chemical erosion and other environments still play a good sealing, damping effect. Therefore, O-ring is one of the most widely used seals in hydraulic and pneumatic transmission systems.
O-Ring compared with other types of seals, has the following advantages:-Suitable for a variety of sealing forms: static seals, dynamic seals, suitable for various uses of materials, Molded O Ring size and groove has been standardized, interchangeability is strong-suitable for a variety of sports: rotational motion, axial reciprocating movement, or combination movement (such as rotating reciprocating movement)--suitable for a variety of different sealing media: oil, water, gas, chemical medium or other mixed medium through the selection of appropriate rubber materials and appropriate formulations designed to achieve oil, water, air, Molded O Ring Gas and various chemical medium effective sealing effect. The temperature range is wide (-60℃~+ 220 ℃) and the pressure can reach 1500kg/cm2 (with the reinforcement ring) when fixed. --Simple design, compact structure, easy to disassemble the O-ring section structure is extremely simple, and has a self sealing effect, reliable sealing performance. Because the O-ring itself and the installation of the structure are extremely simple, and has become standardized, so the installation of replacement is very easy. Molded O Ring The variety of materials can be selected according to different fluids: there are NBR (NBR), fluorine rubber (FKM), Silicone Rubber (VMQ), ethylene propylene Rubber (EPDM), Neoprene (CR), Butyl Rubber (BU), PTFE (PTFE), Natural Rubber (NR), etc.--low cost--the relatively small dynamic friction resistance
O-Ring is a sealing element with a circular shape, it is widely used in a variety of machinery and equipment, in a certain temperature, pressure and different liquid or gas medium to play a role in sealing, compared with other sealing ring, with the following advantages: ①, seal the structure of the site is simple, Molded O Ring the installation of a compact, and light weight. ②, has the self sealing function, often only uses one sealing piece to be able to complete the seal effect. ③, good sealing performance, used as a fixed seal when almost no leakage, used as a movement seal, only when the speed is high only a little leakage. ④, movement friction resistance is very small, Molded O Ring for the pressure of the situation can also adapt to change. ⑤, size and groove have been standardized, low cost, product easy to use and easy to outsource. Compared with other seals, the following three problems exist: the friction resistance of ① and start-up is large. ②, as a pneumatic device seal, must be added lubricating oil to prevent wear. ③, dual-fitting parts, such as sports surface, groove, clearance and other processing dimensions and precision requirements are very strict.