SAE & Sheet Felt
OSTONFELT Company Inc.
100% wool felt is divided into two broad classifications, SAE Felt and Technical Felt. SAE felt is available in rolls or sheets. Technical felt is available only in sheets. Density, which relates to hardness, determines major property differences. Felt density is determined by weighing a 36" x 36" x 1" sample. For example, if a 36" x 36" x 1" felt sheet weighs 20 lbs., it is referred to as "20-lb. felt."
Engineers and designers specify felt for numerous and various reasons and applications including: vibration absorption, noise reduction, bearing strength, sealing, wicking or fluid transmission, lubrication, roller bearings, filters, heat barriers, bumpers, components, liners, retainers, shock absorbers, weather seals, dust shields, anti-squeaking, insulation, padding, plugs, packing, polishing (glass, stone, jewelry, fiberglass metals, plastics, etc.), furniture rubbing and staining, burnishing, pen nibs, lamp bases, legging, sleeves, and countless more!
| Style | 1/4" | 1/2" | 5/8" | 3/4" | 1" |
|---|---|---|---|---|---|
| F-1 | 7.4 lb | 14.8 lb | 18.5 lb | 22.2 lb | 29.6 lb |
| F-2 | 7.4 lb | 14.8 lb | 18.5 lb | 22.2 lb | 29.6 lb |
| F-3 | 7.4 lb | 14.8 lb | 18.5 lb | 22.2 lb | 29.6 lb |
| F-5 | 5.7 lb | 11.3 lb | 14.2 lb | 17.0 lb | 22.7 lb |
| F-7 | 5.7lb | 11.3 lb | 14.2 lb | 17.0 lb | 22.7 lb |
| Thermal Expansion | 0 |
| COEF of Friction | 0.37 |
| Compressibility Recovery, % | 99.0 |
| Effect of Sunlight & Oxidation | None |
| Solvent Resistance and Stability In Oil | Excellent |
| Alkali Resistance (dilute) | Fair |
| Acid Resistance (concentrated) | Good except F-7 |
| Temperature Range, F | -80 +200 |
| Properties | F-1 | F-2 | F-3 | F-5 | F-7 |
|---|---|---|---|---|---|
| Commercial Grade | 16R1 | 16R2 | 16R3 | 12R1 | 12R3 |
| Wool Content % | 95 | 90 | 85 | 95 | 80 |
| Density 1" lbs/sq. yard | 16 | 16.0 | 15.60 | 12.24 | 12.24 |
| Color | White | Pink | Gray | White | Gray |
| Specific Gravity (%) | 34 | 34 | 34 | 26 | 26 |
| Therm. Cond. (70F), btu/hr/sq ft/F/in | 0.36 | 0.36 | 0.35 | 0.30 | 0.30 |
| Air Perm (1/16"), cfm/sq ft/5" H2O | 10-30 | 10-30 | 15-35 | 20-50 | 20-50 |
| Liquid Absorption, % wt. (1.0 sp gr) | >175 | >175 | >190 | >250 | >225 |
| Liquid Absorption, % by volume | 74 | 74 | 76 | 88 | 80 |
| Wicking Height (575 SSU, 70F), in. | 4.0 | 4.0 | 4.0 | 3.0 | 3.0 |
| Vibration Absorption Static | High | High | High | Medium | Medium |
| Vibration Dynamic Stress | High | High | High-medium | High | Medium |
| Noise Reduction Coef (1") | 0.50 | 0.50 | 0.52 | 0.58 | 0.58 |
| Tensile Strength (min), psi | 500 | 500 | 400 | 400 | 250 |
| Elongation (100 psi), % | 13 | 14 | 16 | 16 | 21 |
| Mullen B.S. (1/8"), psi | 250 | 225 | 200 | 175 | 125 |
| Split Resistance (min), lb/2" width | 33 | 28 | 22 | 18 | 12 |
| Hardness, Shore A | 30-40 | 30-40 | 30.40 | 20-30 | 20-30 |
| Compressibility (10% defl), psi | 21 | 21 | 13 | 6 | 6 |
| Abrasion Resistance | Excellent | Excellent | Excellent | Good | Good |
Technical felts are generally available in four grades and densities ranging from 16 pounds to 32 pounds. (Higher densities to more than 50 pounds are available as non-stock standards. The four grades are: S1 - Extra Fine White Wool; S2 - Fine White Wool; S3 - Coarse White Wool; and, S4 - Coarse Gray Wool.
| DEN | 1/4 | 1/2 | 3/4 | 1" | 1 1/4 | 1 1/2 | 2" |
|---|---|---|---|---|---|---|---|
| 16 | 4 lb | 8 lb | 12 lb | 16 lb | 20 lb | 24 lb | 32 lb |
| 20 | 5 lb | 10 lb | 15 lb | 20 lb | 25 lb | 30 lb | 40 lb |
| 26 | 6.5 lb | 13 lb | 19.5 lb | 26 lb | 32.5 lb | 39 lb | 52 lb |
| 32 | 8 lb | 16 lb | 24 lb | 32 lb | 40 lb | 48 lb | 64 lb |
| Wool Content, % min | 95 |
| Thickness Range | 1/8" to 3" |
| Thermal Expansion | 0 |
| Compressibility Recovery, % | 99.0 |
| Effect of Sunlight & Oxidation | None |
| Solvent Resistance and Stability In Oil | Excellent |
| Alkali Resistance | Fair |
| Acid Resistance (concentrated) | Good |
| Temperature Range, F | -80 +200 |
| Properties | 16S Soft | 20S Med | 26S Hard | 32S Hard or Extra Hard |
|---|---|---|---|---|
| Commercial Grade | 16S | 20S | 26S | 32S |
| Coef of Friction % | 0.37 | 0.42 | 0.42 | 0.42 |
| Density 1" lbs/sq. yard | 16 | 20 | 26 | 32 |
| Specific Gravity (%) | 34 | 43 | 56 | 68 |
| Therm. Cond. (70F), btu/hr/sq ft/F/in | 0.36 | 0.45 | 0.63 | 0.91 |
| Air Perm (1/16"), cfm/sq ft/5" H2O | <20 | 10 | <3 | <1 |
| Liquid Absorption, % wt. (1.0 sp gr) | >175 | >100 | >75 | >50 |
| Liquid Absorption, % by volume | 74 | 66 | 58 | 48 |
| Wicking Height | 4.0 | 4.5 | 5.0 | 5.5 |
| Vibration Absorption Static | High | High | Very High | Ultra High |
| Vibration Dynamic Stress | High | High | High | High |
| Noise Reduction Coef (1") | 0.50 | 0.41 | 0.28 | 0.05 |
| Tensile Strength (min), psi | 300-500 | 300-600 | 400-600 | 400-600 |
| Elongation (100 psi), % | N/A | N/A | N/A | N/A |
| Mullen B.S. (1/8"), psi | 250 | 325 | N/A | N/A |
| Split Resistance (min), lb/2" width | 20-32 | 32-44 | 30-48 | 40-50 |
| Hardness, Shore A | 30-40 | 45-55 | 55-65 | 75-85 |
| Compressibility (10% defl), psi | 32 | 58 | 86 | 121 |
| Abrasion Resistance | Excellent | Excellent | Excellent | Excellent |
A course blend of hair fibers combined to produce an inexpensive alternative for your sheet felt needs. Hair felt is available in a range of densities from 16 soft to 32 extra hard. Thickness of 1/2" to 3" are produced. Typical applications for this product include packing, vibration mounting, polishing. and wiping. Hair felt can offer good abrasion resistance, strength and durability.
Long and short runs! Fast quotes! Speedy delivery! Friendly Service! High Quality!
OSTONFELT Company Inc.