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 6620-01-271-2932
NSN 6220-00-624-3857
NSN 6135-01-285-8807
NSN 5905-01-322-4901
NSN 5965-00-739-2063
NSN 5895-00-942-2833
NSN 5910-01-617-8850
NSN 6320-01-578-6006
NSN 6650-01-395-5991
NSN 5945-00-130-2618
NSN 5945-01-152-5075
NSN 5950-01-645-7238