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 6645-01-471-4960
NSN 5965-00-529-0602
NSN 5895-01-485-2470
NSN 4140-00-058-9839
NSN 5930-01-069-2031
NSN 6610-01-543-8567
NSN 6610-01-308-6148
NSN 5960-01-256-1868
NSN 6650-01-573-7165
NSN 6645-01-463-3441
NSN 6610-01-493-2401
NSN 5905-01-076-5665