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 5895-00-404-5974
NSN 5985-01-336-0294
NSN 5999-01-043-6214
NSN 6645-00-103-2517
NSN 4140-00-441-4184
NSN 5910-01-461-8663
NSN 5930-00-555-3007
NSN 6645-00-340-4795
NSN 5835-00-443-1079
NSN 5975-01-129-2496
NSN 5950-01-303-1389
NSN 5915-01-186-9384