| CENTER HOLE DIAMETER | 1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM |
| CROSS-SECTIONAL HEIGHT | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM |
| HARDNESS RATING | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 3238 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |