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 6610-01-259-5296
NSN 5930-01-127-6932
NSN 5935-01-259-4947
NSN 6645-00-906-1769
NSN 6645-01-620-4837
NSN 6145-01-596-7647
NSN 6110-00-104-4341
NSN 5999-01-153-7416
NSN 5990-01-043-7100
NSN 6645-00-079-1430
NSN 6130-00-299-0395
NSN 6650-01-235-8494