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 4140-01-534-6960
NSN 6220-00-617-9616
NSN 5996-00-879-4654
NSN 5910-01-575-8889
NSN 6110-01-433-2694
NSN 6130-00-943-5214
NSN 5999-01-591-3824
NSN 5835-01-200-7153
NSN 5920-00-556-7817
NSN 5998-00-856-8394
NSN 6105-01-598-9077
NSN 6620-00-010-8190