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Valve Steam seals

  • USD 10 - 50 / Piece  
  • 1000 Piece/Pieces
  • WSI
  • China(Taiwan)
  • Tag:Valve Steam seals
Post Date : April 10
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Valve Stem Seal

Valve stem seals (VSS) are devices that provide a defined metering rate of oil to the valve stem interface of internal combustion engines to lubricate the valve guide and minimize engine missions.

Valve stem seals must be both leak-proof and permeable at the same time. The reason for this apparent contradiction is through controlled leakage. The valve stem seal allows a carefully defined amount of engine oil from the cylinder head into the combustion chamber allowing a necessary lubrication of the rotating valve stem in the valve guide.

The benefits of valve stem seals from WSI are:

  • Development to specific customer requirements or use of standards seals

  • Consistent oil metering and long service life for optimum valve lubrication and minimum engine emissions

  • Excellent chemical and temperature resistance

  • Low wear

  • High quality through state-of-the-art manufacturing processes

  • Complete technical service to ensure optimal function

We can do well if our customers have another special requires.

Please tell us if you have any problems about our products.

We can make well solutions for you.

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Hydraulic seals

Hydraulic seals

Hydraulic seals

Hydraulic cylinder seals are used to seal the opening between various components in the hydraulic cylinder and are exposed to hydraulic fluids such as hydrocarbon and phosphate ester and are designed for high-pressure dynamic applications such as hydraulic cylinders. Hydraulic seals usually need to be higher friction seals than pneumatic seals but often operate under lower operating speeds.

The sealing orientation for hydraulic seals can include internal (rod seal), external (piston seal), symmetrical or axial seal. With the internal (rod) seal, the seal is fit into a housing bore and the sealing lip touches the shaft.

The life of hydraulic seals is dependent on many factors including the maximum operating speed, maximum operating temperature, maximum operating pressure and the vacuum rating. When ordering hydraulic seals you will want to know the shaft outer diameter or seal inner diameter, housing bore diameter or seal outer diameter, the axial cross section and the radial cross section.

We can do well if our customers have another special requires.

Please tell us if you have any problems about our products.

We can make well solutions for you.

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GAMMA seals

GAMMA seals

GAMMA seals

Gamma seal

Gamma seals are used in a wide range of applications. The springs of this seal provide a constant axial load which translates into a constant low friction in the engine. The customized design is supported by finite element analysis (FEA) for optimal performance. We offer two types: The RB type and 9RB.

Because of the Gamma seals’ protective metal case it can operate in rough operating conditions. During operation the lip seals against the housing under a contact pressure which is calculated for proper sealing. The sealing lip tends to exert less contact pressure as the speed increases due to centripetal force, which contributes to proper sealing performance. As a result, the seal operates both as a ‘deflector ring’ and ‘clearance seal’.


  • Decreased friction with increasing rotational speed

  • Narrow installation width

  • Effective sealing from centrifugal action

  • Lower demands on surface smoothness, hardness, and tolerances

  • Mechanical protection

  • Easy to fit

RB & 9RB Type


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