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 5965-01-341-5377
NSN 5975-00-593-9767
NSN 4140-01-008-8181
NSN 5835-00-707-6266
NSN 5835-00-905-7165
NSN 6105-01-014-5842
NSN 5950-01-461-9415
NSN 6145-01-423-4734
NSN 6135-01-101-5039
NSN 7035-00-076-4097
NSN 5975-01-106-3595
NSN 5985-01-591-2691