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 5910-00-099-0538
NSN 6130-01-591-9019
NSN 7035-01-501-9118
NSN 7035-00-478-4596
NSN 2925-01-596-9448
NSN 5999-00-974-7853
NSN 5950-00-788-1633
NSN 6620-00-972-3247
NSN 6220-00-034-7280
NSN 5985-00-074-4763
NSN 5999-01-591-8294
NSN 5910-01-526-4999