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 5999-01-508-8832
NSN 6145-01-091-4004
NSN 5965-01-615-8762
NSN 4140-01-584-5298
NSN 5965-01-179-7749
NSN 7035-01-602-9350
NSN 5925-00-927-6969
NSN 5925-01-501-8667
NSN 5920-01-351-5536
NSN 5855-01-598-7392
NSN 5960-00-296-9997
NSN 7035-00-861-7913