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 5895-01-650-7650
NSN 5935-00-968-7534
NSN 5960-01-486-8919
NSN 2925-01-219-9471
NSN 5895-00-954-2865
NSN 5910-00-268-8194
NSN 6145-01-382-1280
NSN 5985-01-455-5747
NSN 6610-01-238-8712
NSN 6685-01-195-5350
NSN 5910-00-325-2146
NSN 6145-01-429-2427