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 5990-00-110-1153
NSN 7035-01-258-7661
NSN 5895-00-276-7916
NSN 5990-00-068-4324
NSN 6240-01-068-3491
NSN 5960-01-462-1864
NSN 2925-01-101-4655
NSN 5945-00-035-8997
NSN 6645-01-627-4123
NSN 5998-01-382-5381
NSN 5996-00-484-9196
NSN 6220-00-177-3086