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 5915-01-230-8381
NSN 5925-01-515-7273
NSN 5998-00-186-8583
NSN 6645-00-770-3742
NSN 6145-01-508-4260
NSN 6220-00-854-1056
NSN 5835-01-030-8914
NSN 6135-01-461-2915
NSN 7035-00-908-4933
NSN 7035-01-443-3052
NSN 5930-01-147-2295
NSN 6620-01-259-2411