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 4140-00-027-5150
NSN 6645-01-021-2225
NSN 6645-01-374-9936
NSN 5905-01-648-2685
NSN 5996-01-592-3011
NSN 6645-00-038-7737
NSN 5950-00-459-5722
NSN 6645-01-574-6160
NSN 5999-00-799-4399
NSN 5998-01-660-4172
NSN 6135-00-840-6451
NSN 6145-00-980-5638