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 5960-01-425-1454
NSN 5925-01-399-6459
NSN 5950-00-941-8933
NSN 6220-01-472-4359
NSN 7035-01-174-1029
NSN 5960-00-468-5353
NSN 5990-01-276-8122
NSN 5855-00-160-2286
NSN 5996-01-596-7296
NSN 5998-01-427-3776
NSN 5915-01-406-4637
NSN 6610-01-065-6057