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 5960-01-439-3731
NSN 5925-01-292-0030
NSN 5910-01-498-3114
NSN 6685-01-502-9028
NSN 6645-00-802-7991
NSN 5960-01-465-6847
NSN 5985-01-329-0324
NSN 6110-01-588-8383
NSN 5996-00-369-5299
NSN 6610-01-111-1954
NSN 6650-01-309-9152
NSN 6650-01-271-1594