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 5925-01-389-4444
NSN 6650-00-267-9194
NSN 6135-01-520-8392
NSN 5905-00-666-4983
NSN 5930-01-443-3096
NSN 5990-00-573-6067
NSN 5996-00-156-5967
NSN 6220-01-520-8111
NSN 6135-01-041-3829
NSN 2925-01-374-2402
NSN 5910-01-422-1699
NSN 5910-01-607-9775