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 6220-01-214-4406
NSN 5855-00-472-2055
NSN 5950-01-171-2796
NSN 4140-01-457-5539
NSN 6610-01-512-2025
NSN 6320-01-207-0636
NSN 5855-01-329-4006
NSN 5910-00-161-4557
NSN 6220-01-449-8551
NSN 6645-00-144-4868
NSN 5910-00-998-5891
NSN 5930-01-150-4684