269results about How to "Extended seal life" patented technology

A hydrodynamically lubricating geometry for the generally circular dynamic sealing lip of rotary seals that are employed to partition a lubricant from an environment. The dynamic sealing lip is provided for establishing compressed sealing engagement with a relatively rotatable surface, and for wedging a film of lubricating fluid into the interface between the dynamic sealing lip and the relatively rotatable surface in response to relative rotation that may occur in the clockwise or the counter-clockwise direction. A wave form incorporating an elongated dimple provides the gradual convergence, efficient impingement angle, and gradual interfacial contact pressure rise that are conducive to efficient hydrodynamic wedging. Skewed elevated contact pressure zones produced by compression edge effects provide for controlled lubricant movement within the dynamic sealing interface between the seal and the relatively rotatable surface, producing enhanced lubrication and low running torque.

The invention provides an anti-corrosive wearproof chemical centrifugal pump. The anti-corrosive wearproof chemical centrifugal pump comprises a pump body, an impeller nut, an impeller, a pump cover, a mechanical sealing set, a sealing box, a shaft sleeve, a carrier, a bearing gland, a bearing, a shaft and a suspension support. The pump body and the suspension support are connected with a base through bolts. The pump body is fixed to the carrier through bolts. The mechanical sealing set comprises a mechanical sealing moving ring and a mechanical sealing stationary ring. The mechanical sealing moving ring is arranged on the impeller. The pump cover, the sealing box and the mechanical sealing set are arranged on the pump shaft jointly. The pump cover is connected with the sealing box through bolts. The mechanical sealing stationary ring, a stationary ring seat and a spring are arranged between the pump cover and the sealing box. The shaft sleeve sleeves the shaft, and the bearing gland is connected to the carrier through bolts. The shaft is detachably connected with the carrier. The pump has the advantages of wide application range, long service life in sealing, wear resistance, corrosion resistance, no clogging and the like, and can be applicable to acid, alkali and / or salt media with any concentration and solid content smaller than or equal to 40%, wherein the hardness or softness degree of particles of the media is unlimited.

A drawer-type dishwasher includes a frame assembly, a wash tub slidably mounted in the frame assembly, and a lid member. The lid member can be lowered onto the wash tub when the wash tub is shifted into the frame assembly, and raised when the wash tub is shifted out of the frame assembly. The lid member includes a seal element that abuts the wash tub when the lid member is lowered. The seal element includes a base portion, an angled, deflecting finger portion and a flat pad portion which projects from the base portion. When the seal element is urged against the wash tub, a compressive force is applied to the flat pad portion causing the deflecting finger to seal against the wash tub in a manner that substantially shields the deflecting finger from excessive compressive forces.

An improved seal for use in fluid systems such as a water jet system includes an outer seal point that is very close to an inner seal point. By spacing these two seal points very close together, the force on the seal is greatly reduced compared to the prior art. In the disclosed embodiment, the outer seal point is on an angled forward face of the seal that abuts a back-up ring angled face. The inner seal point is between the seal and an internal shaft which rotates relative to a housing.

In a vacuum gate valve, a seal member for sealing a gate opening part is bonded to an outer edge part of a planar seal plate that is disposed in such a manner that the planar seal plate is opposed to a valve seat surface of the gate opening part and comes into contact with the valve seat surface. The seal member includes a vacuum seal part that is located on a side farther from the gate opening part and maintains the sealability of the gate opening part when the gate opening part is closed, and also includes a radical seal part that is located on a side closer to the gate opening part and that prevents the seal member from being affected by a treatment gas in the gate opening part when the gate opening part is closed. The vacuum seal part is made of a rubber elastic body, and the radical seal part is configured by providing a radical resistant body that is provided with an excellent radical resistance on the rubber elastic body.

The invention relates to a magnetic liquid and triclinic mouth packing ring combined reciprocating shaft sealing device which is characterized in that a first triclinic mouth packing ring (2), a first pole shoe (3) with an O-shaped ring, a first permanent magnet (4), a second pole shoe (5) with an O-shaped ring, a second triclinic mouth packing ring (6), a third pole shoe (7) with an O-shaped ring, a second permanent magnet (8), a fourth pole shoe (9) with an O-shaped ring, a third triclinic mouth packing ring (10), a fifth pole shoe (11) with an O-shaped ring, a third permanent magnet (12), a sixth pole shoe (13) with an O-shaped ring and a forth triclinic mouth packing ring (14) are arranged at the cavity bottom of a sealing seat (1) with an O-shaped ring, and are connected with the sealing seat (1) with an O-shaped ring by bolts, and the parts are compressed. Magnetic liquid is injected into pole teeth of each pole shoe with an O-shaped ring before the device is used, therefore, the leak problem of a reciprocating compressor is solved.