High
density felt for precision uses where maximum durability and resistance
to wear are required.
White
95%
500
30-40
21
Superior
Superior
F2
High
grade felt, less tensile strength than F-1.
Pink/Blk/Brown
90%
500
30-40
21
Superior
Superior
F3
High
grade felt, less tensile strength than
F-1, very similar to F-2 with less wool content.
Grey
85%
400
30-40
13
Superior
Superior
F5
High
grade, medium density felt recommended for precision uses where
resiliency and durability are important factors.
White
95%
400
20-30
6
Average
Average
F7
Medium
density felt similar to F-5 and recommended for similar applications,
but where slightly less durable material is permissable
Grey
80%
250
20-30
6
Average
Average
F10
High
grade, medium low density felt, similar in quality to the F-5, but
recommended for uses where abrasion and wear resistance are not
important factors.
White
95%
225
15-25
4
Poor
Below
Avg.
F11
Medium
low density felts recommended for uses similar to those of F-10
where less durability can be tolerated.
Grey
87%
200
15-25
4
Poor
Below
Avg.
F13
Low
Density felt with a wide range of uses where resistance to abrasion,
durability and wear are not important requirements.
Grey
75%
75
15-25
3
Poor
Below
Avg.
F15
Very
similar to F-13, but with slightly less wool.
Grey
55%
75
15-25
3
Poor
Below
Avg.
F26
Low
Density Felt recommended for non-mechanical applications when retained
between two other materials.