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: Gaskets,washers & other seals
NSN 6145-00-604-6916
NSN 6620-01-462-5196
NSN 5930-01-486-7653
NSN 6645-01-076-4655
NSN 5965-00-004-6371
NSN 5895-01-392-1386
NSN 5855-01-658-4510
NSN 6645-00-191-4978
NSN 5998-01-167-9922
NSN 5925-01-617-9831
NSN 6105-01-017-5713
NSN 6130-01-411-4438