| CROSS-SECTIONAL SHAPE STYLE | SOLID SINGLE OR COMPOSITION |
| OUTSIDE DIAMETER | 3.250 INCHES NOMINAL |
| APERTURE DIAMETER | 1.375 INCHES NOMINAL |
| CROSS-SECTIONAL THICKNESS | 0.188 INCHES NOMINAL |
| HARDNESS RATING | 40.0 SHORE DUROMETER A MINIMUM AND 50.0 SHORE DUROMETER A MAXIMUM OVERALL |
| MATERIAL | RUBBER BUTADIENE-STYRENE CLASS SBR OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYLE DESIGNATOR | CIRCULAR |