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 5975-00-056-8600
NSN 5930-01-379-3535
NSN 5999-00-542-0541
NSN 6220-01-423-7517
NSN 5950-01-238-9179
NSN 6645-01-302-9608
NSN 6240-00-580-0666
NSN 5965-01-121-2511
NSN 5965-01-092-6344
NSN 6150-01-495-3136
NSN 5930-00-927-2072
NSN 5855-01-131-9336