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 6610-00-301-6365
NSN 7035-00-300-3208
NSN 6610-00-724-1005
NSN 2925-00-707-6770
NSN 5930-00-970-6548
NSN 6110-00-356-5388
NSN 6150-01-536-8331
NSN 4140-00-574-1869
NSN 5996-00-518-0460
NSN 6130-01-274-5473
NSN 5998-00-218-1360
NSN 5990-01-581-5103