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 5895-00-494-8589
NSN 6685-01-430-7167
NSN 6130-01-434-6091
NSN 4140-00-875-4552
NSN 5975-01-209-6806
NSN 5895-01-231-2603
NSN 5996-01-367-2081
NSN 4140-01-322-8491
NSN 5935-01-553-6320
NSN 5925-00-035-8469
NSN 5960-00-960-6805
NSN 5975-01-082-3466