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 6145-00-163-2861
NSN 5950-00-862-6687
NSN 6620-01-624-3933
NSN 6105-00-454-6270
NSN 5920-00-019-0259
NSN 6105-01-363-1288
NSN 5999-01-362-3432
NSN 5895-01-243-7010
NSN 5996-01-141-6916
NSN 5960-00-952-1868
NSN 5960-00-891-9418
NSN 6685-01-152-1781