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 5930-00-067-8031
NSN 5996-00-466-7857
NSN 6645-01-270-3176
NSN 2925-01-387-0870
NSN 5905-01-201-5334
NSN 6135-01-236-8603
NSN 5895-00-107-0198
NSN 5920-01-569-3190
NSN 5910-01-385-6555
NSN 6650-01-564-3452
NSN 6105-01-423-0136
NSN 5965-00-996-3541