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 6130-00-431-1730
NSN 5996-00-270-0340
NSN 5910-00-285-6400
NSN 2925-00-733-3519
NSN 5985-01-248-1161
NSN 6135-01-238-2878
NSN 5996-01-351-6485
NSN 6145-00-116-7810
NSN 6135-01-273-1253
NSN 5950-01-141-9369
NSN 6110-01-287-1325
NSN 4140-01-067-8986