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 4140-00-679-9512
NSN 5930-01-516-7813
NSN 6130-01-290-8072
NSN 6135-00-242-9531
NSN 5835-01-629-2044
NSN 6620-01-098-9866
NSN 5855-00-252-5743
NSN 4140-01-034-1135
NSN 5920-01-107-9062
NSN 5935-01-485-3202
NSN 5999-01-152-1149
NSN 5985-01-035-1278