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 5935-01-090-0496
NSN 5996-01-289-9937
NSN 6685-00-933-4122
NSN 6320-01-648-5538
NSN 6135-01-430-3119
NSN 4140-01-154-3188
NSN 5945-01-299-7846
NSN 5990-01-094-7740
NSN 5985-00-932-7228
NSN 6135-01-038-6225
NSN 5998-00-899-5669
NSN 6645-01-168-8465