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 5920-00-543-1266
NSN 5905-01-088-8340
NSN 6240-01-120-3533
NSN 6145-00-442-3326
NSN 5930-01-591-7475
NSN 5996-00-932-3796
NSN 5945-01-218-5645
NSN 6135-01-518-9813
NSN 5965-00-001-7593
NSN 6135-01-449-2144
NSN 4140-01-319-7786
NSN 5998-01-323-7112