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 6610-00-253-7676
NSN 6110-01-036-8592
NSN 6130-01-119-3002
NSN 2925-01-649-7543
NSN 5835-01-343-7516
NSN 6610-01-168-7943
NSN 5975-00-262-9155
NSN 5925-01-413-7673
NSN 5920-01-618-4473
NSN 5930-00-102-1094
NSN 6110-01-328-8292
NSN 6320-00-242-3300