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 5990-01-206-3606
NSN 5996-00-138-9938
NSN 6220-01-550-8240
NSN 6150-00-539-9812
NSN 6110-01-014-2141
NSN 5925-00-140-2359
NSN 6105-00-888-9977
NSN 6135-00-733-9665
NSN 5960-01-029-9186
NSN 6105-00-925-2226
NSN 7035-01-616-7371
NSN 5950-00-011-8216