| CENTER HOLE DIAMETER | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| COLOR | BLACK |
| CROSS-SECTIONAL HEIGHT | 0.090 INCHES MINIMUM AND 0.098 INCHES MAXIMUM |
| HARDNESS RATING | 75.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM AND 85.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | DTD 458 GRADE B1 MIL STD SINGLE MATERIAL RESPONSE OR WALKER JAMES AND CO LTD, PB80 MFR REF SINGLE MATERIAL RESPONSE |
| MATERIAL | RUBBER |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL REQUIREMENT |