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 5895-01-597-6051
NSN 4140-00-203-4844
NSN 6620-01-213-8772
NSN 6150-01-502-5500
NSN 5930-01-529-7335
NSN 5975-01-537-0133
NSN 5985-00-774-6908
NSN 5905-00-633-8370
NSN 5930-01-006-6622
NSN 5915-01-656-3718
NSN 7035-01-112-1054
NSN 5990-00-539-7859