Cushioning, Dust Sealing and Lubricant Retention
Felt has a dense fibrous structure that enables it to compress against adjoining surfaces whilst remaining resilient enough for many light-duty sealing applications. It is particularly useful for excluding dust, dirt and other contaminants from mechanical assemblies where a conventional pressure seal is not required.
The material can also absorb and retain oils and lubricants, making felt seals useful around shafts, bearings and moving components where controlled lubrication or wiping action is beneficial. Depending on the application, felt may act as both a protective seal and a lubricant reservoir.
Its cushioning and vibration-damping characteristics can additionally help reduce noise, protect delicate surfaces and prevent direct contact between adjoining components.