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 5910-01-285-7634
NSN 5920-01-525-7688
NSN 5990-00-960-3099
NSN 6105-01-392-6114
NSN 6220-00-225-5795
NSN 5999-01-408-4364
NSN 5945-00-952-6072
NSN 5945-00-511-6475
NSN 6320-01-225-9963
NSN 6105-01-085-6002
NSN 6220-01-539-2261
NSN 5990-00-277-3763