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 6110-00-248-2942
NSN 5930-01-455-2554
NSN 6130-00-153-3136
NSN 5895-01-525-7645
NSN 5935-01-464-8874
NSN 5930-01-317-1299
NSN 5990-01-533-1347
NSN 6130-01-655-5054
NSN 5985-01-412-4961
NSN 5999-00-623-6144
NSN 5895-00-562-7387
NSN 5975-01-033-6578