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 6150-00-466-9883
NSN 5915-01-057-0500
NSN 6110-00-288-4179
NSN 6105-01-263-0727
NSN 5950-00-465-2320
NSN 5975-00-958-5141
NSN 6240-00-076-2752
NSN 5965-00-693-8829
NSN 5990-00-093-6794
NSN 6685-01-248-1707
NSN 6130-01-040-3952
NSN 6220-00-691-2409