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 5950-00-252-6165
NSN 6320-00-646-3311
NSN 6645-00-269-8440
NSN 5990-01-017-0263
NSN 6610-00-720-3237
NSN 5915-00-483-4368
NSN 6110-00-429-4777
NSN 5905-00-776-3188
NSN 6650-01-596-8627
NSN 5835-00-198-4936
NSN 6110-00-245-6005
NSN 6110-00-702-0635