A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5985-00-688-3614
NSN 5935-01-215-4439
NSN 5925-01-521-2940
NSN 5975-00-561-4844
NSN 5835-00-601-1402
NSN 5990-01-173-9531
NSN 6240-01-333-1996
NSN 5985-01-207-8657
NSN 5985-01-432-5399
NSN 6650-01-421-2762
NSN 5835-01-631-3940
NSN 6110-01-475-4058