| NAVAL SEA SYSTEMS COMMAND | 53711 |
| ELECTRIC BOAT CORPORATION | 96169 |
| NAVAL SEA SYSTEMS COMMAND | 53711 |
| CROSS-SECTIONAL HEIGHT | 0.460 INCHES NOMINAL |
| CENTER HOLE DIAMETER | 22.800 INCHES NOMINAL |
| HARDNESS RATING | 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM |
| MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-6855,CLASS 1,GRADE 50 MIL SPEC SINGLE MATERIAL RESPONSE |
| A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see PACKING,PREFORMED. For noncircular items with a round cross-section, see SEAL,NONMETALLIC ROUND SECTION and RUBBER,ROUND SECTION. |
