Xinhua Xu Hydraulic O-ring analysis elaborated

The primary specification hydraulic O-ring has a national standard GB 1235-76, GB GB3452.1-92; JIS P TYPE, G TYPE, S TYPE, SS / V TYPE, F TYPE; American Standard AS568, British standard series; European standard series [1]

Hydraulic silicone O-ring is a circular cross-section of the rubber ring, because of its cross-section O type, so called O-rings, also known as O-rings. It began to appear in the mid-19th century, at which time the sealing element of the steam engine cylinders using it as. Hydraulic cylinder for reciprocating motion of the piston seal. Scope: TPU: generally hydraulic cylinders, hydraulic cylinders general equipment. CPU: construction machinery hydraulic cylinders and high temperature, high pressure cylinders. Ingredients: Polyurethane TPU, CPU, rubber.

Hydraulic O-ring seal function excellent job life expectancy is high, dynamic pressure seal jobs life 5-10 times higher than conventional rubber seal products, up to several times, countable and seal matrix with life under certain conditions.

Hydraulic O-ring friction is small, dynamic and static friction flat is "0" shaped rubber ring friction 1 / 2-1 / 4, to eliminate low-speed, low pressure movement "creeping" appearance.

Hydraulic O-ring high wear and abrasion after sealing surface elasticity with automatic compensation function.

Hydraulic O-rings distinguished from smooth function. It can be used for oil-free and smooth seal.

Hydraulic O-ring structure is simple, convenient device.

O-ring hydraulic pressure job: 0-300MPa; operating speed: ≤15m / s; Operating temperature: -55-250 degrees.

Hydraulic O-ring Applicable medium: hydraulic oil, gas, water, mud, oil, emulsion, water - glycol, acids.

Hydraulic O-ring for installation on a variety of machinery and equipment at a temperature of rules, the pressure, and not as liquid and gaseous media, to stop the movement or status began sealing effect. Pressure O-ring is mainly used for static seals and reciprocating seals. Seal for rotary motion, the only low-speed rotary sealing device. Hydraulic O-ring on the peripheral device or generally circular cross-section of the inner seal from the rectangular groove. O-ring in a hydraulic oil, acid, wear, chemical attack still play a prominent environmental sealing, damping effect. Thus, the O-ring hydraulic hydraulic and pneumatic drive system is the most widely used a seal.

Advantages of hydraulic O-ring

Hydraulic O-ring seals and other types of contrast, has the following advantages:

- Suitable for a variety of sealing methods: static seals, dynamic seals

Suitable for all kinds of useful information, and groove dimensions are standardized, interchangeable - suitable for a variety of exercise methods: rotation, axial reciprocating movement or combination of movements (such as rotating the shuttle combined motion) - suitable for a variety of different the sealing medium: oil, water, gas, chemical, mixed media or other media through the appropriate choice of rubber materials and appropriate formulations planning to complete the oil, water, air, gas and various chemical mediators useful sealing effect. The use of a wide temperature range (- 60 ? - + 220 ?), the use of fixed pressure up to 1500Kg / cm2 (and reinforcing ring and use).

- Planning simple, delicate structure, convenient assembly and disassembly

Hydraulic O-ring cross-sectional structure is extremely simple, and there is self-sealing effect, the sealing function reliably.

Because the O-ring itself and hydraulic equipment parts are extremely simple structure, and constituted standardization, which equipment replacement are very simple.

- Profile varieties

Can be selected on the basis of different fluids: YES nitrile rubber (NBR), fluororubber (FKM), silicone rubber (VMQ), ethylene propylene rubber (EPDM), chloroprene rubber (CR), butyl rubber (BU), polytetrafluoroethylene (PTFE), natural rubber (NR), etc. - Low cost