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 5945-01-244-9636
NSN 5990-01-340-3575
NSN 5945-01-027-9982
NSN 4140-00-111-2617
NSN 5920-01-591-9424
NSN 6320-01-170-4068
NSN 6645-01-311-9006
NSN 5996-01-104-7884
NSN 5935-00-952-1026
NSN 5835-01-061-9434
NSN 5996-01-486-1886
NSN 5950-00-763-9861