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 6685-00-832-5741
NSN 2925-00-080-2124
NSN 5935-01-562-3385
NSN 5960-01-385-0191
NSN 6320-01-583-6809
NSN 5999-01-519-9353
NSN 6685-01-467-3035
NSN 5930-01-052-3525
NSN 5930-01-573-7265
NSN 6240-01-494-2217
NSN 5990-00-495-2859
NSN 6105-01-147-7293