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 6645-01-304-0889
NSN 6240-00-228-1931
NSN 5895-01-065-1659
NSN 5990-00-518-3195
NSN 5990-01-442-3520
NSN 5999-01-437-8843
NSN 5935-01-157-9778
NSN 5945-01-024-9378
NSN 6650-00-599-9509
NSN 2925-00-056-7112
NSN 5930-01-257-2589
NSN 6130-01-138-7547