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 6685-01-453-5724
NSN 5975-01-447-3270
NSN 5998-01-020-8986
NSN 5998-00-156-7249
NSN 5930-00-971-6950
NSN 4140-01-067-0533
NSN 5945-01-463-9427
NSN 6130-00-670-7758
NSN 5915-01-277-6039
NSN 5975-01-246-4141
NSN 5930-01-634-0659
NSN 6220-00-015-7811