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 6320-01-583-6809
NSN 6135-01-270-8601
NSN 5920-00-846-6632
NSN 6110-00-862-3097
NSN 6685-00-631-4739
NSN 5930-01-440-3004
NSN 7035-01-344-4192
NSN 5915-01-055-5643
NSN 6685-01-569-4374
NSN 5910-00-139-4808
NSN 5835-00-034-4976
NSN 5998-01-621-2760