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Packing Felt
- Aug 27, 2018 -

Felt seal is a sealing structure composed of felt ring in the groove of the shell.

In the contact seal device, felt seal is the simplest one, it is widely used in low speed, normal temperature, normal pressure motor, gear box and other machinery, for sealing butter, slippery oil.Felt seal is also suitable for dustproof, but should not be used as gas seal.When felt seals are used as liquid seals, the greater the viscosity of the medium, the better the sealing effect.If rough felt is used in felt sealing, the circular speed of the shaft is only allowed below 3 m/s. If fine felt is used, the speed can be increased by 2-3 times, but not more than 10 m/s.If properly designed, with high shaft hardness, good surface gloss, and sufficient lubrication, felt seals can work at speeds of 20 m/s on rare occasions.Felt the use of sealing temperature is generally not more than 90 ℃, using pressure is commonly a atmospheric pressure.The packing packing is closed between the shaft and the housing (packing box) and then compressed with a gland and screws.The packing seal is widely used in the sealing of various pumps (such as pumps, vacuum pumps, etc.) and is used as the sealing device of liquid or gas medium.