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 5975-01-395-6003
NSN 6620-00-202-5122
NSN 5920-01-351-2193
NSN 5965-01-396-7508
NSN 5910-00-987-3532
NSN 6105-01-571-7371
NSN 5998-01-443-3002
NSN 5895-01-478-7209
NSN 5895-00-004-8952
NSN 5960-00-020-0074
NSN 6610-00-105-5110
NSN 5855-00-408-2611