| MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 81349 |
| CROSS-SECTIONAL SHAPE STYLE | SOLID SINGLE OR COMPOSITION |
| OUTSIDE DIAMETER | 3.250 INCHES NOMINAL |
| APERTURE DIAMETER | 2.562 INCHES NOMINAL |
| CROSS-SECTIONAL THICKNESS | 0.188 INCHES NOMINAL |
| ELONGATION PERCENTAGE | 300 MAXIMUM |
| HARDNESS RATING | 35.0 SHORE DUROMETER A MINIMUM OVERALL AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL |
| MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYLE DESIGNATOR | CIRCULAR |
| A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see WASHER, FLAT; SHIM; BEARING, WASHER, THRUST; and SPACER RING. Excludes DISK, VALVE; SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; SEAL, NONMETALLIC SPECIAL SHAPED SECTION; SHIELDING GASKET, ELECTRONIC; and RING, SEALING JAR. |
