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 6685-01-530-6200
NSN 6645-00-456-7653
NSN 6110-00-581-4445
NSN 5910-01-266-9931
NSN 5996-01-534-4963
NSN 5965-00-215-5866
NSN 6145-01-440-6141
NSN 6145-01-654-9635
NSN 5915-01-317-3541
NSN 5835-01-042-5315
NSN 6220-00-507-9831
NSN 5835-01-447-2544