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 5915-01-587-5380
NSN 6220-01-567-6932
NSN 6320-01-556-2011
NSN 2925-01-466-0892
NSN 6685-00-270-8070
NSN 2925-01-285-7163
NSN 5935-00-894-1385
NSN 5950-01-308-3375
NSN 6145-01-068-9944
NSN 5998-00-850-6147
NSN 5975-00-807-9527
NSN 5895-01-206-7923