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 6685-01-573-7031
NSN 6135-01-380-4396
NSN 5925-01-528-7741
NSN 5930-01-617-3883
NSN 6320-01-574-1915
NSN 6645-01-128-9353
NSN 6145-01-585-3745
NSN 5996-01-352-2487
NSN 5935-01-357-2947
NSN 6145-00-431-8376
NSN 6150-00-104-8035
NSN 5999-01-546-9114