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 5895-00-686-2029
NSN 6105-01-476-7470
NSN 5855-00-763-2155
NSN 5985-01-434-5968
NSN 5975-01-318-6517
NSN 5975-00-397-9533
NSN 5950-00-191-3215
NSN 6645-01-633-1852
NSN 5935-01-191-8270
NSN 6685-01-169-2821
NSN 6620-00-905-6590
NSN 5998-01-541-0160