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 5998-01-452-2250
NSN 5985-00-281-0810
NSN 5920-01-366-4543
NSN 7035-01-358-8361
NSN 6320-00-336-9123
NSN 5925-01-204-8770
NSN 7035-00-238-3662
NSN 5950-01-606-5384
NSN 6610-01-354-3087
NSN 5910-01-313-2456
NSN 6150-01-467-2380
NSN 6220-00-761-6253