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 6610-00-868-3671
NSN 5905-01-287-3409
NSN 5905-01-610-4207
NSN 5910-00-949-5261
NSN 5935-00-528-2185
NSN 6150-01-660-8969
NSN 6620-01-223-5689
NSN 6650-01-033-6667
NSN 5965-00-826-1841
NSN 6620-00-904-2139
NSN 6240-01-436-2832
NSN 6620-01-020-4526