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 5895-01-202-8097
NSN 6130-00-211-7355
NSN 6620-00-137-0332
NSN 5925-00-001-5748
NSN 6685-01-605-3617
NSN 6620-01-048-4145
NSN 5998-00-274-7215
NSN 4140-01-226-6944
NSN 5998-00-144-8211
NSN 5855-01-222-1242
NSN 5910-00-064-6559
NSN 5920-01-396-6159