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 5905-01-562-6140
NSN 5999-01-329-9658
NSN 5855-01-305-6101
NSN 6645-01-659-1583
NSN 5895-01-153-2249
NSN 6145-00-202-8570
NSN 5895-00-325-9036
NSN 6650-01-084-9726
NSN 6130-01-235-7535
NSN 6645-00-913-2723
NSN 5975-00-404-1270
NSN 5905-00-217-2980