| CENTER HOLE DIAMETER | 1.170 INCHES MINIMUM AND 1.182 INCHES MAXIMUM |
| CROSS-SECTIONAL HEIGHT | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM |
| HARDNESS RATING | 60.0 SHORE DUROMETER A MINIMUM AND 70.0 SHORE DUROMETER A MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-22050 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |