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 6220-00-891-1593
NSN 7035-01-643-8304
NSN 5915-00-269-2748
NSN 6220-01-334-0613
NSN 5990-00-357-8103
NSN 6620-01-147-5615
NSN 4140-01-272-0219
NSN 6650-01-381-7296
NSN 5895-01-172-8078
NSN 5990-01-102-9617
NSN 6685-01-401-5360
NSN 6240-01-088-7629