Felt engineering guides
These guides help engineers and buyers specify felt parts: which grade to choose, how to write dimensions on a drawing and when felt beats rubber or foam. Grade figures follow SAE J314, and each guide states the conditions its numbers assume.
Materials and grades
- SAE felt grades explained: which wool felt fits your part
Wool content, weight, strength and density for F-1 to F-26.
Machine maintenance
- Felt way wipers: which felt to use on machine slides
Grade, oiling and laminated wipers for lathe and mill ways.
Specifying felt parts
- Felt washer drawing call-outs
The six values a felt washer drawing needs, with inch and metric examples. - Felt seals versus lip seals
When a felt seal suits a bearing or shaft better than a rubber lip seal, and when it does not. - Felt versus rubber gaskets
Where felt works as a gasket, and where rubber or foam is the safer pick.
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