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HRC Type
Industry Standard HRC type Flexible Couplings
 |  |
| Size of Coupling | Min Bore | Max Bore | D | dn | a | h | C | L1 | L2* |
| 7 | 10 | 32 | 69 | 55 | 21 | 25 | 31 | 25 | 68 |
| 9 | 10 | 38 | 85 | 60 | 20 | 34 | 32 | 31 | 91 |
| 11 | 10 | 48 | 112 | 80 | 19 | 44 | 45 | 45 | 117 |
| 13 | 20 | 55 | 130 | 90 | 18 | 50 | 50 | 53 | 136 |
| 15 | 28 | 65 | 150 | 104 | 24 | 58 | 62 | 60 | 155 |
| 18 | 28 | 75 | 180 | 120 | 35 | 68 | 77 | 73 | 184 |
| 23 | 45 | 95 | 225 | 150 | 40 | 85 | 99 | 86 | 229 |
| 28 | 55 | 130 | 275 | 206 | 51 | 106 | 119 | 106 | 286 |
| *Approximate overall length |
| Size of Coupling | 7 | 9 | 11 | 13 | 15 | 18 | 23 | 28 |
| Black Pebax® - General Use | KE-7 | KE-9 | KE-11 | KE-13 | KE-15 | KE-18 | KE-23 | KE-28 |
| Type | Material | Temperature °C | Resistant to Oil |
| Low Absorption of Liquids | |||
| Pebax® | Polyether - Block Amides | -40 up to +85 | |
| Partially Resistant to Chemicals |