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 5985-01-396-5598
NSN 5905-01-363-1043
NSN 5985-00-186-0732
NSN 5990-01-407-6615
NSN 5975-01-352-5853
NSN 7035-01-095-5454
NSN 5975-01-053-7577
NSN 6320-01-399-6177
NSN 5990-01-116-2181
NSN 5835-00-372-3736
NSN 2925-01-494-3259
NSN 5935-00-020-8278