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 5998-00-238-5627
NSN 5965-01-181-7715
NSN 6105-01-607-6572
NSN 6145-00-927-3187
NSN 6610-01-498-4063
NSN 5960-01-333-8428
NSN 6645-01-519-6324
NSN 6685-01-435-5628
NSN 5945-00-440-0516
NSN 5999-00-603-3174
NSN 5905-01-329-1709
NSN 5930-00-369-1496