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 5950-01-519-2709
NSN 5996-01-167-9234
NSN 6685-01-323-0671
NSN 5960-01-098-8437
NSN 6150-00-822-2859
NSN 5855-00-405-4532
NSN 5835-01-632-6627
NSN 5905-00-858-3455
NSN 5999-01-287-1104
NSN 4140-00-163-2868
NSN 6645-01-035-3787
NSN 5996-01-038-3850