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 6645-01-441-0937
NSN 5855-00-987-1171
NSN 5835-00-905-7165
NSN 5999-00-519-5455
NSN 5920-01-160-0057
NSN 5835-01-352-7211
NSN 5920-01-358-5235
NSN 5855-00-436-3852
NSN 6220-00-118-4546
NSN 5990-01-577-2120
NSN 5985-01-407-5810
NSN 5935-00-959-4987