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 6110-01-598-1820
NSN 6105-00-875-9879
NSN 5975-00-197-2048
NSN 6240-01-320-1308
NSN 5960-01-245-6088
NSN 5985-00-994-7175
NSN 6105-01-334-0698
NSN 5905-01-056-1046
NSN 5998-00-229-3756
NSN 5925-01-088-6863
NSN 4140-01-390-9552
NSN 5999-01-605-0657