Star hydraulic seal type analysis

Star hydraulic cylinder seals are the most common seals, hydraulic seals star is a typical lip seal, both for piston or rod can get a good seal, U-ring under low pressure, rely on lip seal interference deformation, due to the small contact area, friction is relatively low, as the pressure increases, the elastic deformation of the lip increases the tensile, compressive and bending stress increases, U-shaped ring radial clamping force automatically increases the length of contact with the sealing surface increased until the entire axial length of the U-ring seal in contact with the surface, so as to ensure a good seal under high pressure.

Star seal is a double-acting hydraulic seal itself has elastic sealing capability. The initial installation of the pre-compression produces radial or axial contact stress superimposed system pressure to achieve sealing function. The superimposed sealing force increases the system pressure increases. Under pressure, like the star seal type hydraulic fluid as a high surface tension. It can be transmitted to a uniform pressure on each side.

Star wide hydraulic seals applications, but mainly for dynamic sealing, but the use of pressure and speed restrictions by. For sealing the reciprocating motion of the piston, the piston rod of the plunger. For sealing oscillating, rotating or spiral motion of the shaft or spindle.

Star hydraulic seal reciprocation: ≤0.5m / s.

Star hydraulic seal rotary motion: ≤2m / s.

Star hydraulic seal temperature range :( depending on material and medium).

Media: By selecting different material properties, which can be time to seal all liquids, gases and chemicals.

Star hydraulic seals can completely replace the use of O-rings, non-circular cross-section, to avoid rolling back and forth motion. Performance is based on the O-ring on the same system has been improved and enhanced, standard size, fully to American AS568 Standard O-rings.