| CENTER HOLE DIAMETER | 1.597 INCHES MINIMUM AND 1.627 INCHES MAXIMUM |
| CROSS-SECTIONAL HEIGHT | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM |
| HARDNESS RATING | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS3238 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | PACKING,PREFORMED |