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 6685-01-522-1525
NSN 5910-00-723-0985
NSN 6610-00-081-2365
NSN 6685-01-198-3650
NSN 6645-00-478-6509
NSN 2925-01-228-6554
NSN 5999-01-555-7511
NSN 5930-01-449-0039
NSN 6130-01-651-3928
NSN 6105-00-015-0971
NSN 5990-00-583-3726
NSN 5990-00-067-6791