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 6130-01-422-6114
NSN 5915-00-665-2854
NSN 5975-00-644-2605
NSN 5855-01-136-9532
NSN 5910-01-110-7141
NSN 2925-01-528-7333
NSN 6610-01-122-0064
NSN 6145-01-181-5405
NSN 5960-01-013-9346
NSN 6145-01-095-0826
NSN 5835-01-647-0775
NSN 5999-01-397-1573