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 6320-01-576-6310
NSN 6685-01-592-7453
NSN 6130-01-324-5198
NSN 6150-01-188-8232
NSN 5935-01-368-6743
NSN 6220-01-352-1643
NSN 6650-00-242-7961
NSN 5925-01-575-7586
NSN 5975-01-208-7644
NSN 5945-00-142-9690
NSN 5996-01-604-9653
NSN 5985-00-611-8128