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 5950-00-588-0894
NSN 5910-00-432-9371
NSN 5975-00-449-1209
NSN 6240-01-015-2370
NSN 5905-00-401-9989
NSN 6645-01-557-4608
NSN 6610-00-761-5459
NSN 6150-01-158-6152
NSN 6645-00-759-3962
NSN 5915-00-648-0073
NSN 5998-01-053-0767
NSN 6135-00-246-0324