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 5945-01-139-9978
NSN 5925-01-317-3869
NSN 5975-01-571-8930
NSN 6105-01-558-2041
NSN 6685-01-173-8846
NSN 5895-01-207-0753
NSN 6320-01-240-4637
NSN 5925-01-323-7756
NSN 5996-00-854-3311
NSN 5999-01-513-9169
NSN 6620-01-498-4780
NSN 5910-01-028-9298