Density of Felt for a Wide Belt Sander Plenum

Understanding hardness grades for industrial felt. December 31, 2012

Can anyone tell me the density of felt commonly used on a wide belt platen?

Forum Responses
(Solid Wood Machining Forum)
From contributor R:
#1 Firm is what I learned for a term 40 years ago and have been using ever since. I get it from Mcmaster.

From contributor J:
The felt used on most sanders has a hardness of 060. Some manufacturers run a softer felt and will get one in a hardness of 040, etc.

From contributor R:
S2-24 felt would be in the Shore A Durometer which would put it at 055 hardness. All the felt you need is at Mcmaster in whatever durometer you need.