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 5999-00-104-3502
NSN 6150-00-194-0930
NSN 5925-01-394-4830
NSN 6145-01-504-8141
NSN 5950-01-272-6145
NSN 7035-01-203-8010
NSN 5925-01-585-4174
NSN 6240-01-126-9167
NSN 6320-01-544-6447
NSN 5910-01-167-8041
NSN 4140-01-406-3292
NSN 5960-01-274-3900