How to Keep Dust and Contaminants Out of the System
Posted on 2017/04/15 | Cliff | NewsDust may seem like a minor issue, but it can cause major damage to cylinder walls, rods, seals and other components. If you’re not careful, so can dirt, mud, debris and water. These foreign contaminants are real problems for mechanical systems operating over time, causing friction, surface wear and imperfect sealed contact between surfaces.
The FixJust as seals keep pressurized fluids and gases in piston/cylinder systems, there are components that keep contaminants out. These components — wipers, excluders and scrapers — are fitted on the exterior side of the main seals. The exact type you need depends on what you’re protecting against.
- Wipers: used for light applications to seal out fine material like water, dust and wet mud; made of soft plastic or firm elastomer (rubber)
- Scrapers: used for aggressive applications to seal out hard stuff like ice, dry mud or other solid debris; made of hard plastic or metal, such as brass
- Excluders: somewhere in between wipers and scrapers in terms of protection, excluders seal out medium-level material