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 5990-00-212-4316
NSN 6105-00-368-0066
NSN 5910-01-142-2688
NSN 5835-01-449-7511
NSN 6685-00-026-7691
NSN 6150-00-305-2744
NSN 6130-01-304-4273
NSN 5990-00-954-6584
NSN 6610-01-500-0863
NSN 4140-01-476-1096
NSN 6620-01-382-7392
NSN 5998-01-650-2487