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 6150-01-510-8543
NSN 6110-00-636-1234
NSN 5960-00-296-1530
NSN 5905-00-547-6083
NSN 6620-00-100-4517
NSN 5998-01-408-6505
NSN 6645-01-647-0509
NSN 5965-01-200-6613
NSN 6610-01-419-4123
NSN 5975-01-159-7384
NSN 6135-00-767-0331
NSN 6145-01-649-4015