| CENTER HOLE DIAMETER | 7.65 MILLIMETERS NOMINAL |
| COLOR | BLACK |
| CROSS-SECTIONAL HEIGHT | 1.78 MILLIMETERS NOMINAL |
| HARDNESS RATING | 90.0 SHORE DUROMETER A NOMINAL |
| MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | O-RING |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | SUITABLE FOR SUBMARINES CERTIFICATED ITEM SUPPLIED WITH PROVENANCE AND TRACEABILITY DOCUMENTATION |
| SPECIAL FEATURES | NEXT HIGHER ASSY ATTACK PERISCOPE AND FAIRING MAST |