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 7035-01-421-4446
NSN 5905-00-958-5940
NSN 5975-00-424-0290
NSN 6685-01-188-7157
NSN 5999-01-530-1796
NSN 5835-00-148-9719
NSN 6135-00-377-9165
NSN 6620-01-282-9970
NSN 6150-00-453-9774
NSN 6320-00-731-6134
NSN 5910-01-566-5423
NSN 6145-00-952-1815