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 5920-01-347-0728
NSN 6320-01-547-2743
NSN 6620-01-449-3101
NSN 4140-01-424-2069
NSN 6105-00-523-5139
NSN 6110-00-064-7006
NSN 6110-01-356-1301
NSN 5998-01-361-9290
NSN 6610-00-527-8892
NSN 5990-01-350-9950
NSN 5920-00-904-3727
NSN 5905-01-528-3619