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 6645-00-349-9336
NSN 6685-01-022-2126
NSN 6220-00-809-1775
NSN 5985-00-889-0320
NSN 6620-01-423-7300
NSN 6685-00-920-8281
NSN 6650-01-350-0067
NSN 5999-01-212-9507
NSN 5930-00-230-4980
NSN 6620-01-330-8802
NSN 5910-01-252-9842
NSN 6620-00-955-6122