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 6220-01-515-3735
NSN 7035-01-179-4857
NSN 6135-00-209-6918
NSN 5925-00-243-1474
NSN 5855-00-610-4052
NSN 7035-01-585-7007
NSN 5965-00-421-9007
NSN 4140-01-231-8578
NSN 5960-01-628-2760
NSN 5855-00-688-9954
NSN 6110-01-011-0795
NSN 6105-01-625-1169