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 5950-01-400-1576
NSN 6110-01-422-2619
NSN 5990-01-432-4984
NSN 5965-00-575-4089
NSN 6320-00-036-3688
NSN 6685-01-277-0604
NSN 5945-01-247-0770
NSN 4140-01-384-3405
NSN 5965-00-128-2991
NSN 5960-01-283-0308
NSN 5975-01-176-8438
NSN 5960-01-423-4240