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 6135-00-613-1068
NSN 5835-00-554-0399
NSN 2925-01-011-2325
NSN 5945-00-082-7563
NSN 6110-00-525-3418
NSN 5905-00-203-3929
NSN 5965-01-306-4484
NSN 7035-00-585-2113
NSN 6610-01-167-8747
NSN 7035-01-289-4022
NSN 6135-00-982-1882
NSN 5999-01-510-3783