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 5905-01-101-0699
NSN 5990-00-337-5359
NSN 6135-01-222-0703
NSN 6320-00-456-0836
NSN 5895-01-210-9191
NSN 5996-01-096-6495
NSN 6145-01-258-0908
NSN 6145-01-047-7729
NSN 5925-00-719-9876
NSN 6645-00-283-6794
NSN 6135-01-391-6515
NSN 5935-01-464-3729