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 5999-01-634-0576
NSN 6650-01-355-6608
NSN 6145-00-107-7913
NSN 5895-01-228-7294
NSN 5920-00-806-9475
NSN 4140-01-196-5984
NSN 5915-01-136-8642
NSN 6110-01-296-3590
NSN 5998-01-130-7459
NSN 5855-01-165-6361
NSN 5925-01-628-6202
NSN 6240-01-070-6028