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 6320-01-399-6177
NSN 6150-01-181-6422
NSN 5895-01-076-2854
NSN 5975-01-256-4546
NSN 5915-01-099-7064
NSN 6135-01-138-8157
NSN 6320-01-227-2648
NSN 5910-00-795-2930
NSN 5905-01-335-8384
NSN 5935-00-059-9469
NSN 5985-01-184-6927
NSN 5960-00-379-4466