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What are hydraulic seals?
Posted: Wed Jun 29, 2022 1:55pm
A seal is a device or substance used between two or more components to prevent something from passing between them.
Hydraulic and pneumatic cylinders operate by air or fluid being pumped into the cylinder at pressure. Because cylinders work at high pressure, there is lots of potentials for air or fluid to escape between the different components, even though the very smallest of gaps. Wherever the different cylinder components meet, if they are not welded, they will require sealing.
Types of hydraulic seals
There are six general types of seal that may be found in a hydraulic cylinder. They are:
- Wiper, Scraper or Dust Seal
- Rod Seal, Gland Seal or Neck Seal
- Static Seal
- Piston Seal
- Wear Ring, Bearing Ring or Guide Ring
- Rotary Seals
