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 6145-01-421-4257
NSN 5835-01-224-0406
NSN 5998-01-430-3883
NSN 6650-01-560-8576
NSN 6240-00-019-3146
NSN 5960-01-522-0391
NSN 5855-00-494-9581
NSN 6620-01-581-8283
NSN 6645-00-720-3953
NSN 5999-01-111-8781
NSN 6220-01-581-8339
NSN 6645-00-234-3873