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 5930-01-499-8383
NSN 6150-00-295-3869
NSN 6685-01-257-3121
NSN 5999-00-379-2226
NSN 5990-00-532-2641
NSN 5835-01-273-3916
NSN 6150-00-056-3093
NSN 6650-01-139-0022
NSN 5935-00-188-1791
NSN 6240-00-340-6977
NSN 5855-01-136-9532
NSN 6130-01-456-8605