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 6685-00-945-1869
NSN 6620-00-606-0446
NSN 5910-00-317-7913
NSN 5950-00-995-5675
NSN 5935-01-283-8201
NSN 7035-01-451-0143
NSN 5935-01-503-6442
NSN 5905-01-269-3950
NSN 6220-01-192-5423
NSN 5999-01-537-7932
NSN 5920-00-768-5814
NSN 4140-00-144-6833