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Clearance Seals and Labyrinth Seals
the radial clearance of the bearing being sealed. In addition, the operating speed and temperature must be considered when using a labyrinth seal. These seals generally do not perform well at low operating speeds. Another form of labyrinth seal is a laminar sealing ring, which uses a series of flat
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Technical Innovations Regarding Housed Rotating Unions for Machine Tools
, the well proven floating seal with Viton membrane and the seal ring from silicon carbide; besides, the absolute novelty is the two-step labyrinth. Behind all this is one main thought: The "POP-OFF" rotating union produces a minimum leakage during the switching operation, i.e. between dry run and coolant
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Down-to-earth role for imidized polymers
. Techniques for processing imidized polymers today routinely include compression molding, extrusion, and injection molding. Flexible processing lets designers replace metals or ceramics in applications such as O-ring backups, seal rings, valve seats, thrust washers, and bearings. Imidized polymers are also
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Radial Shaft Seals
can avoid problems. Additional Seal OptionsIf pumps are located outdoors or in places with high external contamination, an auxiliaryV-ring seal can often significantly reduce wear to the radial seal lip (Figure 6). These can be installed to run against metal seal cases and turn with the shaft
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Magnetic fluids tackle tough sealing jobs
, such as a mechanical face or labyrinth seal, combines the advantages of both and can further increase effectiveness. MAGNETIC FLUIDS. Magnetic fluids are stable colloidal suspensions of small magnetic particles such as magnetite (Fe304). The particles, about 10 nm in diameter, are dispersed
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Keeping dirt out and lube in
sufficiently to completely isolate them from dust and fine particles, so wipers must seal the nut from abrasive attack. But regular, noncontacting wipers (labyrinth seals) will not keep small particles from entering the nut because there is a gap of several tenths of a millimeter between wiper and screw
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Bearing Closures - Bearing Seals and Bearing Shields
the catalog dimensions carefully. Other types: On larger bore bearings (above 10mm), labyrinth type rubber seals are available. These bearings have a groove on the inner ring as well where the seal lip makes contact. This creates a more effective seal without increasing torque. Double lip rubber seals
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Gardner Denver(R) Blowers Accommodate Growth at a Savings - MINDIS TREATMENT SERVICES
seal is used in most. Seals (air) ..........................................................Labyrinth (carbon ring available). air and several gas applications. Seals (gas) ..........................................................................................Carbon ring. Bearings