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 6130-01-188-7411
NSN 6685-00-326-0724
NSN 5996-00-257-8628
NSN 5925-00-321-8040
NSN 5895-00-953-3972
NSN 5925-00-413-1210
NSN 5835-00-491-3834
NSN 6610-01-467-7068
NSN 5910-01-370-3977
NSN 5915-00-730-4434
NSN 5999-01-421-6734
NSN 6620-01-147-0441