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 6685-01-387-8482
NSN 7035-00-371-7749
NSN 5990-01-027-1869
NSN 5910-00-043-4759
NSN 6150-01-163-2024
NSN 5930-00-182-1437
NSN 5960-00-158-4841
NSN 6320-00-228-5678
NSN 6620-00-828-3842
NSN 4140-00-074-2389
NSN 6645-01-060-5250
NSN 5855-01-487-5048