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 5960-01-202-6610
NSN 5960-01-641-5493
NSN 5910-01-078-8952
NSN 5999-00-935-2335
NSN 6645-01-449-1824
NSN 7035-00-003-7518
NSN 5996-01-465-5079
NSN 5920-00-893-0498
NSN 5965-01-142-8044
NSN 7035-00-623-4744
NSN 6645-01-025-1002
NSN 6145-01-130-5416