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 6110-01-181-0293
NSN 6650-00-419-4154
NSN 6145-01-615-2892
NSN 6685-01-147-9277
NSN 6650-01-567-8552
NSN 6105-01-209-2711
NSN 5930-00-189-8672
NSN 5855-01-447-3137
NSN 5985-01-436-7527
NSN 7035-00-834-2090
NSN 5910-01-140-6400
NSN 6145-00-778-8796