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 5945-01-168-8746
NSN 6145-01-619-4942
NSN 2925-01-391-1540
NSN 6645-01-457-8642
NSN 5945-01-225-5464
NSN 6135-01-116-3385
NSN 6620-01-312-9113
NSN 5835-01-268-1924
NSN 5835-01-432-1277
NSN 5998-00-096-1063
NSN 5895-01-167-9233
NSN 5985-00-108-8481