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 6685-00-146-2308
NSN 7035-00-557-5570
NSN 6620-00-248-6950
NSN 6220-01-124-2486
NSN 5910-01-381-4753
NSN 5930-01-596-0743
NSN 5985-00-089-0531
NSN 5895-01-557-5365
NSN 5998-00-770-4835
NSN 5925-01-395-7061
NSN 6130-00-896-6262
NSN 6685-01-378-9963