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 6320-00-905-0543
NSN 5975-00-971-8863
NSN 5895-01-490-1012
NSN 5905-01-226-7716
NSN 6220-01-009-4190
NSN 5835-00-503-2608
NSN 5965-01-468-6186
NSN 5930-00-112-9126
NSN 5910-01-199-7339
NSN 5985-00-397-7296
NSN 5960-01-036-3839
NSN 5835-00-825-2512