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 6145-01-184-5186
NSN 5965-01-436-0390
NSN 6220-01-432-2232
NSN 5945-01-064-0684
NSN 6150-00-630-4635
NSN 5915-01-069-2775
NSN 6150-00-832-0739
NSN 5855-01-070-8084
NSN 5910-00-035-5534
NSN 6105-01-212-9245
NSN 5905-01-483-2153
NSN 6620-01-380-4882