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 5965-00-581-0981
NSN 6145-00-935-2646
NSN 7035-00-455-7666
NSN 7035-01-267-4836
NSN 5915-00-269-4463
NSN 5905-00-222-4322
NSN 5950-01-569-2280
NSN 5996-00-211-7010
NSN 6610-00-462-1672
NSN 5998-01-347-1976
NSN 5925-01-029-3483
NSN 6620-00-067-4946