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 5999-01-077-4752
NSN 5965-01-145-3732
NSN 6145-01-218-5807
NSN 5950-01-387-3519
NSN 7035-00-185-8683
NSN 6145-01-338-8344
NSN 5935-01-358-9267
NSN 5930-00-554-1064
NSN 5985-00-698-1828
NSN 6685-01-329-4837
NSN 5930-00-183-8598
NSN 6645-01-499-7385