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 5930-00-399-3237
NSN 6610-00-445-1154
NSN 6130-01-056-5251
NSN 5999-00-899-1338
NSN 5925-01-054-5473
NSN 5965-01-279-1075
NSN 6610-01-177-2942
NSN 5895-01-238-1077
NSN 5985-00-253-4708
NSN 6620-00-075-2179
NSN 5996-01-384-2115
NSN 5950-00-416-9705