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 5950-00-914-3030
NSN 4140-01-337-5328
NSN 7035-01-487-5842
NSN 6110-01-411-6000
NSN 6145-01-617-1708
NSN 5925-00-463-4006
NSN 5975-01-225-4403
NSN 5960-01-573-6483
NSN 4140-01-634-0330
NSN 5960-00-147-9861
NSN 6220-01-213-3885
NSN 5998-00-421-7715