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 5990-01-315-3754
NSN 6645-01-468-7669
NSN 6110-01-509-1448
NSN 5855-01-241-1054
NSN 6110-01-020-3532
NSN 6110-00-503-6643
NSN 6650-01-227-6032
NSN 5998-01-644-3846
NSN 5855-00-079-2370
NSN 6130-00-988-3257
NSN 6320-01-219-5174
NSN 6620-01-125-8904