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 2925-01-660-9597
NSN 6130-01-238-3018
NSN 5950-01-114-2199
NSN 6320-01-259-2604
NSN 5945-00-998-9199
NSN 5895-00-219-6078
NSN 5985-01-201-0568
NSN 6685-00-058-9526
NSN 5935-01-570-2157
NSN 5960-01-447-1154
NSN 5998-01-327-2977
NSN 5985-00-091-1122