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 6150-00-448-2357
NSN 5935-01-372-6508
NSN 6685-01-193-8879
NSN 5960-01-241-1844
NSN 6105-00-189-1849
NSN 6645-01-265-0648
NSN 5960-00-850-8896
NSN 6320-01-439-5264
NSN 5910-01-114-9807
NSN 6130-00-077-4746
NSN 5975-00-952-1791
NSN 5925-01-565-6538