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 6240-01-528-7108
NSN 5925-00-186-0765
NSN 5935-01-519-2237
NSN 5990-01-447-7779
NSN 6130-00-978-6703
NSN 5996-01-397-0651
NSN 5990-00-230-8981
NSN 6320-01-411-9222
NSN 6610-01-083-1446
NSN 6135-00-583-3966
NSN 6150-01-352-0462
NSN 5910-00-734-6143