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 5950-01-353-0235
NSN 5920-01-204-0449
NSN 5905-01-356-1333
NSN 6240-01-239-1488
NSN 6220-01-506-5349
NSN 5985-00-036-8287
NSN 6110-01-350-3449
NSN 6130-01-606-9717
NSN 4140-01-420-7269
NSN 5895-01-042-2114
NSN 5895-01-088-7751
NSN 7035-00-312-3055