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 5835-01-100-3265
NSN 2925-00-373-8837
NSN 5999-00-769-7407
NSN 6610-00-708-3226
NSN 5998-00-864-4881
NSN 5905-01-646-7699
NSN 6240-01-468-5337
NSN 5855-01-551-4525
NSN 6105-01-327-3174
NSN 5996-00-952-3452
NSN 5905-01-050-8400
NSN 6320-00-343-1798