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 6645-00-410-2395
NSN 5935-01-047-8506
NSN 5910-00-901-7502
NSN 5965-01-088-5414
NSN 6650-00-011-3435
NSN 5835-01-624-5666
NSN 6620-01-397-2260
NSN 6145-00-727-4430
NSN 5915-01-045-0724
NSN 6240-00-020-4709
NSN 6150-00-081-6742
NSN 5910-00-280-8394