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 6645-00-596-5388
NSN 5935-00-912-1439
NSN 4140-00-529-0844
NSN 6685-00-754-7495
NSN 5998-01-545-6063
NSN 5925-01-388-3325
NSN 7035-01-042-0527
NSN 4140-01-501-6031
NSN 5965-01-388-3492
NSN 6620-01-337-9070
NSN 5945-00-180-8374
NSN 6320-01-466-4175