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 5960-01-599-9821
NSN 5930-01-068-0997
NSN 5925-00-035-8469
NSN 2925-01-510-9378
NSN 6220-01-653-4707
NSN 6220-01-581-5986
NSN 6145-01-352-4503
NSN 6610-00-753-2281
NSN 5915-01-239-4435
NSN 5945-01-509-7851
NSN 5990-00-081-5370
NSN 6320-00-139-1090