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 6620-01-100-8899
NSN 2925-01-374-2402
NSN 5960-00-959-5226
NSN 5996-00-466-3099
NSN 5855-01-196-7082
NSN 5855-01-597-1836
NSN 6135-01-204-8712
NSN 5895-01-170-4309
NSN 6610-01-376-9199
NSN 6220-01-247-4380
NSN 7035-00-055-9778
NSN 5996-00-705-9518