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 5945-00-127-6461
NSN 5999-01-323-8216
NSN 5998-01-060-1578
NSN 4140-00-167-4712
NSN 6130-00-799-3806
NSN 5950-00-155-8340
NSN 5975-01-307-9826
NSN 7035-01-247-6256
NSN 5910-01-254-2044
NSN 5996-01-541-4121
NSN 6105-00-228-2394
NSN 5895-00-821-9067