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 5998-00-619-1663
NSN 5915-01-271-1513
NSN 2925-01-411-4666
NSN 5925-01-661-0259
NSN 5998-00-949-6312
NSN 5910-01-243-0599
NSN 6685-01-287-9974
NSN 6240-00-372-4841
NSN 2925-00-290-7052
NSN 6650-00-411-7132
NSN 6110-01-118-1105
NSN 7035-01-286-2677