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 6685-01-464-3766
NSN 5990-01-240-1100
NSN 6620-01-172-5497
NSN 5920-01-522-8211
NSN 6240-00-717-0844
NSN 6145-00-071-4937
NSN 6150-01-179-3107
NSN 5895-00-270-6595
NSN 5835-00-572-7445
NSN 5925-01-471-9700
NSN 5999-01-563-2134
NSN 5975-01-500-3563