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 6620-00-193-9503
NSN 5975-01-381-5747
NSN 5960-01-350-2925
NSN 6150-01-480-7042
NSN 5998-01-123-8412
NSN 6130-00-358-4320
NSN 5835-00-419-6576
NSN 5905-01-057-8705
NSN 6650-00-966-5205
NSN 6135-01-223-3869
NSN 5985-01-173-3309
NSN 6105-01-573-9515