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 6110-00-504-0159
NSN 5945-00-927-0820
NSN 6650-01-625-1962
NSN 6645-01-584-0892
NSN 5915-01-461-3089
NSN 6610-01-462-3508
NSN 6145-01-027-4743
NSN 5905-01-483-0593
NSN 5835-01-096-8570
NSN 5960-01-449-1310
NSN 5835-00-431-4451
NSN 5999-00-525-4320