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 5910-00-868-8845
NSN 6645-01-442-6476
NSN 6645-01-209-0264
NSN 6685-01-549-6157
NSN 5915-00-810-6746
NSN 5905-00-215-6728
NSN 6685-01-432-9396
NSN 5996-01-592-4339
NSN 5835-01-519-3834
NSN 6320-01-582-0161
NSN 6135-01-446-8310
NSN 5910-01-606-9761