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 5915-01-562-5959
NSN 5990-00-201-1162
NSN 6685-00-459-9612
NSN 5915-01-355-3791
NSN 6110-01-082-4172
NSN 6150-00-324-4409
NSN 5895-01-254-0457
NSN 6685-00-267-9480
NSN 5960-00-050-0442
NSN 6135-01-329-7994
NSN 6645-01-595-4323
NSN 5835-01-386-4027