| CENTER HOLE DIAMETER | 17.910 INCHES MINIMUM AND 18.000 INCHES MAXIMUM |
| CROSS-SECTIONAL HEIGHT | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM |
| HARDNESS RATING | 60.0 SHORE DUROMETER A MINIMUM AND 70.0 SHORE DUROMETER A MAXIMUM |
| OUTSIDE DIAMETER | 18.408 INCHES MINIMUM AND 18.602 INCHES MAXIMUM |
| MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| TEMP RATING | -70.0 FAHRENHEIT AND 180.0 FAHRENHEIT |