F-10 Density and Thickness
S.A.E. Specification Number F-10
A.S.T.M. Federal and Felt Association Type and Grade Number 12R3X
A.S.T.M. Federal and Felt Association Type and Grade Number 9R1
Density Percent Specific Gravity 18.1
Actual (1) Wool Content (Min.) Percent 95
Carbon Tetrachloride Soluble (Max.) Percent 2.5
Water Soluble (Max.) Percent 2.5
Carbon Tetrachloride & Water Soluble (Max.) Percent 3.0
Ash (Max.) Percent 2.5
Tensile Strength (Min.) PSI 225
Splitting Resistance (Min.) Lbs. Per 2" Width 8
Trade Designation Firm Pad
Color White
Standard Width Inches 72
THICKNESS WEIGHT
Nominal (inch) Limits (inch) Nominal (lbs/sq. yd.) Limits (lbs/sq. yd.)
1/8 0.105 - 0.145 1.06 0.98 - 1.14
3/16 0.165 - 0.211 1.59 1.47 - 1.71
1/4 0.224 - 0.276 2.12 1.96 - 2.28
5/16 0.284 - 0.342 2.65 2.45 - 2.85
3/8 0.343 - 0.407 3.18 2.94 - 3.42
1/2 0.462 - 0.538 4.24 3.92 - 4.56
5/8 0.581 - 0.669 5.30 4.90 - 5.70
3/4 0.700 - 0.800 6.36 5.88 - 6.84
7/8 0.819 - 0.931 7.42 6.86 - 7.98
1 0.938 - 1.062 8.48 7.84 - 9.12