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 5945-01-140-4330
NSN 5990-00-409-3594
NSN 6320-01-255-2096
NSN 6220-00-102-7158
NSN 5915-01-502-0630
NSN 5945-01-036-1962
NSN 5965-01-399-8454
NSN 2925-00-066-9700
NSN 5905-00-941-7780
NSN 5925-01-139-9972
NSN 5950-00-404-8091
NSN 5930-01-244-1656