H type coupling rubbers are mostly manufactured from nitrile (nbr) rubber with a hardness of 70 ShA. There are many factors that determine the hardness value of H-type couplings, and by taking these factors into consideration, custom manufacturing can be done.
| Q 68 mm | Q 180 mm |
| Q 80 mm | Q 200 mm |
| Q 95 mm | Q 225 mm |
| Q 110 mm | Q 250 mm |
| Q 125 mm | Q 280 mm |
| Q 140 mm | Q 300 mm |
| Q 160 mm | Q 315 mm |
