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 2925-01-243-0328
NSN 5835-01-055-6859
NSN 6685-00-924-4900
NSN 5950-01-125-6157
NSN 5990-00-288-1820
NSN 6110-01-065-4469
NSN 6145-01-187-7682
NSN 6135-00-411-3171
NSN 6620-01-120-9847
NSN 5999-01-299-5595
NSN 7035-01-193-2667
NSN 2925-01-463-0594