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| Durometer Types & Specifications |
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| Type | Model | Main Spring | Indenter Description | Applications | ||
| Type A ASTM D2240 |
306L |
211 | 821 gf |
Truncated Cone 35° Included Angle |  |
Soft rubber, elastomers, leather, waxes |
| 408 | 501A | |||||
| 201 | 512A | |||||
| Type D ASTM D2240 |
307L |
212 | 4.5 kgf |
Conical 30° Included Angle |  |
Hard rubber, plastics |
| 409 | 502D | |||||
| 202 | 512D | |||||
| Type B ASTM D2240 |
306BL |
501B | 821gf |
Concical 30° Included Angle |  |
Rubber, elastomers |
| 408B | 511B | |||||
| Type C ASTM D2240 |
307CL |
502C | 4.5 kgf |
Truncated Cone 35° Included Angle |  |
Medium-hard rubber, plastics |
| 409C | 512C | |||||
| Type DO ASTM D2240 |
413 | 502DO | 4.5 kgf |
3/32" Hemispherical |  |
Dense textile windings, medium printing rollers |
| 512DO | ||||||
| Type O ASTM D2240 |
410 | 821 gf |
3/32" Hemispherical |  |
Soft printing rollers, textile windings | |
| Type OO ASTM D2240 |
411 | 113 gf |
3/32" Hemispherical |  |
Sponge rubber, soft rubber | |
| Type OOO ASTM D2240 |
412 | 113 gf |
1/2" Hemispherical |  |
Very soft materials e.g. open cell foams | |
| Type SL PTC 1055 |
302SL | 142 gf |
1sq.cm - Circulator |  |
Foam rubber | |
| The following is a list of selected materials with the durometer type typically used to test its hardness | |||||||
| Material | Durometer ASTM Type | Material | Durometer ASTM Type | Material | Durometer ASTM Type | Material | Durometer ASTM Type |
| Abs | D | Acetate | D | Acrylic | D | Buna-N | A |
| Butyl | A | Delrin | D | Epoxy (Potting Compound) | D | Ertalyte | D |
| Felt | A | Garolite | D | Hypalon | A | Kevlar | D |
| Leather | A or D | Neoprene | A | Nitrile | A | Nylon | D |
| Polycarbonate (Lexan) | D | Polyester | D | Polyethylene | D | Polystrene | D |
| Polyurethane | A or D | PVC (Polyvinyl-Chloride) | A or D | SBR (Styrene-Butadiene) | A | ||
| Sorbothane | OO | Teflon | A or D | Silicone Rubber | A | ||
| Wood | D | Vinyl | A | Wax | A | ||
| Test Stands & Constant Load Weight |
|
For Use with PTC Duromters Only
| Model | Description | ||||||
| 320 |  |
Precision Spring Loaded Test Stand for Type A, B, C, D, DO, & O | |||||
| 441 |  |
Portable 1 kg Constant Load Weight for Type A, B, & O | |||||
| 470 |  |
Precision Deadweight Test Stand for Models 302SL, 411, & 412 | |||||
| 471 |  |
Precision Deadweight Test Stand for Type A, B, & O | |||||
| 473, 476 |  |
Precision Deadweight Test Stand for Types A, B, C, D, DO, & DO | |||||
| 475, 477 |  |
Precision Deadweight Test Stand for Type C, D, & DO | |||||
| Paul N. Gardner Company, Inc. • Phone 1.800.762.2478 • Fax 954.946.9309 |
