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 4140-01-592-3151
NSN 5855-00-256-5562
NSN 6320-01-399-1633
NSN 6240-01-523-6064
NSN 5905-01-531-7660
NSN 5965-01-182-5768
NSN 5925-00-156-0680
NSN 5920-01-602-9407
NSN 5998-01-437-4580
NSN 5965-00-925-7314
NSN 6220-01-317-7625
NSN 5905-01-010-2894