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 6650-00-095-6490
NSN 5999-00-168-1888
NSN 5895-00-627-9705
NSN 5996-01-429-9205
NSN 5925-01-432-6603
NSN 5915-01-392-5579
NSN 5975-00-259-0267
NSN 5975-01-493-3263
NSN 5985-00-301-0226
NSN 5990-01-290-7069
NSN 6150-00-821-2847
NSN 5925-01-535-4409