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 5930-01-641-5477
NSN 5950-01-597-3001
NSN 5835-01-384-3206
NSN 5965-01-429-9777
NSN 6645-00-572-2535
NSN 6135-00-203-9645
NSN 5975-00-233-6301
NSN 5905-01-565-0089
NSN 6610-00-973-8559
NSN 5910-01-004-6419
NSN 6130-01-460-8128
NSN 6135-01-022-5427