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 5945-01-523-0806
NSN 5925-01-182-3286
NSN 6150-00-196-5257
NSN 5998-00-125-6383
NSN 7035-01-423-8343
NSN 7035-01-408-6802
NSN 6320-00-790-4844
NSN 6240-01-512-8129
NSN 5990-01-560-7032
NSN 7035-01-369-1445
NSN 7035-01-508-6447
NSN 5990-01-548-5979