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 5905-00-959-3159
NSN 6610-01-575-8795
NSN 5945-00-227-8581
NSN 6130-00-502-3196
NSN 5996-01-415-8673
NSN 5990-01-341-4891
NSN 5920-01-634-0250
NSN 7035-00-020-2227
NSN 5835-00-759-1109
NSN 5910-00-451-1545
NSN 6620-00-169-1609
NSN 5935-01-281-8424