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 6650-00-087-6428
NSN 5835-00-233-6327
NSN 5910-00-960-8659
NSN 6620-01-595-4691
NSN 6320-01-029-4220
NSN 6650-01-088-5199
NSN 5905-01-442-7293
NSN 5855-00-451-6155
NSN 6620-00-692-4504
NSN 5895-01-439-2224
NSN 6645-01-283-1476
NSN 5855-01-459-9254