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 6620-00-286-5721
NSN 5835-01-442-6079
NSN 6135-01-226-4071
NSN 5935-01-238-9416
NSN 6620-01-327-3011
NSN 7035-01-206-2623
NSN 5985-01-042-4924
NSN 6150-01-014-5691
NSN 5835-01-376-8454
NSN 5905-01-447-2806
NSN 5910-00-225-6804
NSN 5925-01-262-0759