Sutherland Felt Company ISO 9000:2001 Certified
phone: 248.280.0450
fax: 248.280.1034

SAE Specification Chart *

Commercial Standard Grade 16R1 16R1X 16R2 16R3 16R3X 12R1 12R2 12R3 12R3X 9R1 9R2 9R3 9R4 9R5 8R5
SAE Number F-1 F-50 F-2 F-3 F-51 F-5 F-6 F-7 F-55 F-10 F-11 F-12 F-13 F-15 F-26
NTA Number 34R1 34R1 34R2 34R3 34R3 26R1 26R2 26R3 26R3 18R1 18R2 --- 18R3 --- 17R2
General Properties
Wool Content (fiber basis) min. % 95 95 90 85 92 95 87 80 75 95 87 85 75 55 45
Density (1"), Lbs./Sq Yd 16 15.6 16 15.6 15.6 12.24 12.24 12.24 12 8.48 8.48 8.48 8.48 8.48 7.2
Standard Thickness Range, in. 1/8 to 1 3/64 to 3/32 1/8 to 1 1/8 to 1 3/64 to 3/32 1/8 to 1 1/8 to 1 1/8 to 1 1/16 to 3/32 1/8 to 1 1/8 to 1 1/8 to 1 1/8 to 1 1/8 to 1 1/8 to 1
Standard Width, in. 60 60 or 72 60 60 60 or 72 60 60 or 72 72 60 or 72 72 72 72 72 72 72
Color white white any but gray or black gray gray white gray gray gray/black white gray gray gray gray gray
Physical Properties
Specific Gravity (%) 34 34 34 34 34 26 26 26 26 18 18 18 18 18 17
Therm. Cond. (70F) btu/hr/sq ft/F/in. 0.36 0.32 0.36 0.35 0.32 0.3 0.3 0.3 0.3 0.3 0.24 0.24 0.24 0.24 0.25
Thermal Expansion 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Air Perm (1/16"), cfm/sq ft/0.5" H2) 10 - 30 15 - 25 10 - 30 15 - 35 15 - 40 20 - 50 20 - 50 20 - 50 20 - 50 75 - 150 75 - 150 75 - 150 75 - 150 75 - 150 100 - 200
Liquid Absorption, % by weight (1.0 sp gr) >175 >180 >175 >190 >170 >250 >225 >225 >225 >400 >375 >350 >350 >350 >400
by volume 74 75 74 76 75 80 80 80 81 88 88 88 88 88 92
Capillarity (wicking height, 575 SSU, 70F) in. 4 4 4 4 4 3 3 3 3 2.5 2.5 2.5 2.5 2.5 ---
Coef of Friction Vibration Absorption 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37 0.37
Static load bearing cap/unit area high --- high high --- medium medium medium --- low low low low low very low
dynamic stress endurance high --- high high-med. --- high high medium --- high high-med medium low low very low
Noise Reduction Coef (1") 0.5 0.55 0.5 0.52 0.55 0.58 0.58 0.58 0.58 0.58 0.64 0.64 0.64 0.64 0.65
Mechanical Properties
Tensile Strength (min), psi 500 500 500 400 300 400 275 250 200 225 200 100 75 75 ---
Elongation (100 psi), 100% 13 8 14 16 9 16 18 21 25 33 35 35 37 39 ---
Mullen Bursting Strength (1/8"), psi 250 225 225 200 225 175 150 125 200 75 60 55 50 40 25
Split Resistance (min), lb/2" width 33 --- 28 22 --- 18 16 12 --- 8 6 3 2 2 ---
Hardness Range, Shore A 30 - 40 --- 30 - 40 30 - 40 --- 20 - 30 20 - 30 20 - 30 --- 15 - 25 15 - 25 15 - 25 15 - 25 15 - 25 5 - 15
Compressibility 10% defl), psi 21 --- 21 13 --- 6 6 6 --- 4 4 3 3 3 1
Recovery (within 1 min after 10% defl) % 99 99 99 99 99 99 99 99 99 99 99 99 99 99 99
Abrasion Resistance excellent excellent excellent excellent excellent good good good good fair fair fair fair fair poor
Chemical and Environmental Properties
Effect of Sunlight and Oxidation none none none none none none none none none none none none none none none
Solvent Resistance and Stability in Oil excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent excellent
Acid Resistance, dilute excellent excellent excellent excellent excellent excellent excellent good good excellent excellent good fair fair fair
concentrated good-fair fair-good good-fair good-fair fair-good good-fair good-fair fair fair fair-good fair-good fair-good fair fair poor
Alkali Resistance, dilute fair fair fair fair fair fair fair fair fair fair fair fair fair fair fair
concentrated low low low low low low low low low low low low low low low
Temperature Range, F -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200 -80 to 200

* Please Note: The above information has been carefully reviewed to be as reliable as possible. However, due to the diversity of felt applications we cannot guarantee its accuracy, and urge you to make your own tests to determine the suitability of a given felt material.

Special Orders normally require a 3-4 week lead time and a manufacturing minimum. Items designated as in-stock are normally inventoried, but may occasionally be in the process of being produced, thus requiring a 3-4 week lead time.