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 6220-01-434-2365
NSN 4140-00-407-1326
NSN 6610-01-158-6540
NSN 5996-01-426-8531
NSN 6220-01-513-0060
NSN 6240-01-393-5945
NSN 5930-01-422-3732
NSN 6620-01-549-6653
NSN 6685-01-462-4451
NSN 6610-01-096-8746
NSN 5930-00-401-6229
NSN 6685-01-356-5901