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 5990-00-321-8459
NSN 6220-01-230-0872
NSN 5965-00-028-9646
NSN 6145-01-442-2516
NSN 5990-00-446-0518
NSN 6610-01-459-7535
NSN 6620-01-142-8277
NSN 6610-01-238-8712
NSN 5925-01-449-1246
NSN 5950-01-132-9125
NSN 5985-00-262-0823
NSN 5920-00-888-7737