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 5985-01-327-9565
NSN 5855-01-411-3360
NSN 4140-01-158-4139
NSN 5960-00-831-8683
NSN 5835-00-092-1136
NSN 5985-01-103-8770
NSN 6650-01-023-2698
NSN 5965-00-111-2073
NSN 5835-00-233-6327
NSN 6645-00-419-4860
NSN 5925-01-535-1318
NSN 5895-01-027-1754