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 5930-00-400-3390
NSN 6105-00-639-6857
NSN 5905-01-434-1821
NSN 6150-01-301-9851
NSN 5960-01-560-8461
NSN 6110-00-253-1881
NSN 5920-00-829-3634
NSN 6610-00-009-2736
NSN 5996-00-829-6692
NSN 6650-00-853-3575
NSN 5835-01-332-2867
NSN 5855-01-429-8702