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 5945-00-889-1494
NSN 7035-00-585-2113
NSN 6650-00-475-7746
NSN 5905-00-687-2121
NSN 6650-01-408-5089
NSN 5895-01-108-7214
NSN 6130-00-236-1963
NSN 5965-00-894-0015
NSN 5910-00-362-6687
NSN 5910-01-026-7585
NSN 5998-01-435-5835
NSN 6135-01-584-0941