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 5910-01-283-6988
NSN 5950-01-093-6958
NSN 6620-01-015-2470
NSN 5996-01-246-4675
NSN 5910-01-213-0762
NSN 5950-01-388-0860
NSN 2925-01-359-9818
NSN 5905-01-479-3836
NSN 5905-00-935-6954
NSN 5935-00-258-3824
NSN 5998-00-012-7811
NSN 5855-01-585-6624