Proton-8 uses Dyneema® fiber for high strength and low weight, with a polyester overlay to provide the heat resistance and grip necessary for use on bitts and capstans. Its flexible, torque-free, 8-strand construction performs well on both single- and split-drum winches. Proton-8 is Samthane coated, which increases wear life.
| Diam. (inch) | Circ. (inch) | Weight per 100 ft. (lbs) | Avg. Strength (lbs) | Min. Strength (lbs) | Diam. (mm) | Circ. (mm) | Weight per 100 M (kg) | Avg. Strength (kg) | Min. Strength (kg) | ISO 2307 Strength (metric tons) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | 25 | 61,000 | 54,900 | 24 | 72 | 37.2 | 27,700 | 24,900 | 27.7 |
| 1 1/8 | 3 1/2 | 30.5 | 76,600 | 68,900 | 28 | 84 | 45.4 | 34,700 | 31,300 | 34.7 |
| 1 1/4 | 3 3/4 | 38.5 | 96,600 | 86,900 | 30 | 90 | 57.3 | 43,800 | 39,400 | 43.8 |
| 1 5/16 | 4 | 41.5 | 116,000 | 104,000 | 32 | 96 | 61.8 | 52,400 | 47,200 | 52.4 |
| 1 3/8 | 4 1/8 | 46 | 120,000 | 108,000 | 34 | 100 | 68.4 | 54,300 | 48,800 | 54.3 |
| 1 1/2 | 4 1/2 | 55.4 | 139,000 | 125,000 | 36 | 108 | 82.4 | 63,000 | 56,700 | 63 |
| 1 5/8 | 5 | 68 | 156,000 | 140,000 | 40 | 120 | 101 | 70,600 | 63,500 | 70.6 |
| 1 3/4 | 5 1/2 | 74.8 | 211,000 | 190,000 | 44 | 132 | 111 | 95,700 | 86,100 | 95.7 |
| 2 | 6 | 99 | 264,000 | 238,000 | 48 | 144 | 147 | 120,000 | 108,000 | 120 |
| 2 1/8 | 6 1/2 | 112 | 308,000 | 277,000 | 52 | 156 | 167 | 140,000 | 126,000 | 140 |
| 2 1/4 | 7 | 125 | 351,000 | 316,000 | 56 | 168 | 186 | 159,000 | 143,000 | 159 |
| 2 3/8 | 7 1/8 | 140 | 425,000 | 383,000 | 57 | 174 | 208 | 193,000 | 174,000 | 193 |
| 2 1/2 | 7 1/2 | 149 | 440,000 | 396,000 | 60 | 180 | 222 | 200,000 | 180,000 | 200 |
| 2 5/8 | 8 | 172 | 485,000 | 436,000 | 64 | 192 | 257 | 220,000 | 198,000 | 220 |
| 2 3/4 | 8 1/2 | 188 | 520,000 | 468,000 | 68 | 204 | 280 | 236,000 | 212,000 | 236 |
| 3 | 9 | 198 | 602,000 | 542,000 | 72 | 216 | 294 | 273,000 | 246,000 | 273 |
| 3 1/4 | 10 | 254 | 698,000 | 628,000 | 80 | 240 | 378 | 317,000 | 285,000 | 317 |
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