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 6320-01-215-1133
NSN 6130-01-323-8267
NSN 6610-00-186-9180
NSN 7035-01-187-4286
NSN 6145-01-597-1398
NSN 5985-01-234-4562
NSN 5985-00-267-1037
NSN 5935-00-161-7014
NSN 6620-01-364-0195
NSN 5950-00-170-6790
NSN 5910-01-657-9795
NSN 5960-01-240-2365