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 5935-01-010-3415
NSN 5910-01-607-6699
NSN 6645-01-437-5290
NSN 6620-01-146-6968
NSN 6645-00-429-0172
NSN 5985-01-275-3979
NSN 5945-00-241-9632
NSN 5985-01-555-6721
NSN 5990-01-016-3006
NSN 2925-01-436-7325
NSN 5985-00-938-1149
NSN 4140-01-463-9023