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 6110-01-294-7089
NSN 5920-00-007-5165
NSN 5915-01-212-4492
NSN 6320-00-908-6841
NSN 6135-00-100-0485
NSN 5998-00-986-9528
NSN 5910-01-197-4227
NSN 5950-00-998-3135
NSN 5960-00-676-9237
NSN 5965-00-416-6618
NSN 6645-00-189-7075
NSN 5895-01-442-5391