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 6220-00-187-8569
NSN 6645-00-038-7737
NSN 5920-01-537-0684
NSN 5895-00-898-4447
NSN 5835-00-233-6327
NSN 5905-00-401-7386
NSN 5975-00-982-4465
NSN 5905-00-332-5542
NSN 6130-01-479-8963
NSN 5950-01-139-5266
NSN 6320-01-631-7828
NSN 6650-01-538-8776