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 5925-00-888-1380
NSN 6145-01-631-3941
NSN 5998-00-269-5444
NSN 5999-01-312-6852
NSN 5920-01-096-0817
NSN 6150-00-854-5498
NSN 5915-00-613-6748
NSN 6610-00-664-2190
NSN 6110-01-221-1977
NSN 6150-01-497-9533
NSN 5985-00-053-5568
NSN 5920-00-100-7219