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 2925-01-520-4194
NSN 5996-00-935-2647
NSN 2925-01-067-4446
NSN 5930-01-288-0727
NSN 6110-01-142-8339
NSN 6145-01-062-4200
NSN 7035-01-310-2587
NSN 6135-01-400-2947
NSN 6320-01-173-7950
NSN 5905-01-034-9275
NSN 5835-01-091-2553
NSN 5895-01-445-6341