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 5855-01-657-7657
NSN 6650-01-519-3818
NSN 6610-01-414-1755
NSN 5990-00-518-0684
NSN 5990-00-067-6791
NSN 5999-01-227-5689
NSN 6135-01-463-2445
NSN 6610-01-464-7883
NSN 5985-01-336-0149
NSN 5945-01-472-2099
NSN 2925-00-887-7092
NSN 6620-00-028-3370