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 5935-01-418-5354
NSN 6620-01-350-5103
NSN 5910-01-265-7616
NSN 5996-00-383-6173
NSN 5920-01-609-3282
NSN 5985-01-186-8404
NSN 5975-01-279-1095
NSN 5935-00-432-2297
NSN 4140-00-166-8023
NSN 6220-01-420-7812
NSN 5905-00-176-2695
NSN 2925-01-609-8464