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 6130-01-063-7446
NSN 5925-01-348-4223
NSN 5935-01-585-9747
NSN 6685-00-198-9506
NSN 6610-00-280-6037
NSN 5975-00-950-0588
NSN 2925-00-523-3729
NSN 5855-01-423-1497
NSN 5985-01-183-8218
NSN 5925-00-614-3820
NSN 6685-01-515-8743
NSN 4140-00-905-6570