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 5935-01-374-3903
NSN 6150-01-182-9433
NSN 5965-01-178-7853
NSN 6620-01-476-7355
NSN 5975-01-608-9040
NSN 5998-01-056-7433
NSN 5925-01-110-1918
NSN 5935-01-577-5797
NSN 6645-01-010-3746
NSN 5915-01-040-2721
NSN 5975-01-536-9613
NSN 6620-01-348-1893