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 5950-01-012-0525
NSN 5905-00-608-3938
NSN 6620-00-145-3010
NSN 5999-01-448-4898
NSN 6130-00-186-0737
NSN 5920-01-131-3999
NSN 6150-00-419-6008
NSN 6220-01-617-1256
NSN 5855-01-243-2355
NSN 6150-00-254-1041
NSN 7035-00-020-2227
NSN 6240-00-079-0112