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 5920-00-704-5718
NSN 5996-01-449-3662
NSN 6610-01-332-5126
NSN 5990-00-081-3357
NSN 6650-01-145-5663
NSN 6150-01-412-7451
NSN 6685-01-116-4526
NSN 5835-00-957-3565
NSN 5835-00-059-5854
NSN 5975-00-571-8467
NSN 5910-01-384-3808
NSN 6240-01-624-3473