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 5910-01-266-1996
NSN 6650-00-073-2709
NSN 6220-01-419-3980
NSN 7035-00-055-9778
NSN 5975-00-755-3703
NSN 5990-00-328-4490
NSN 6685-01-029-3773
NSN 5835-00-165-3069
NSN 6620-01-449-8743
NSN 6145-00-139-7570
NSN 5925-00-949-2966
NSN 6110-01-053-4811