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 6620-00-753-0745
NSN 2925-00-365-3289
NSN 5910-01-633-9963
NSN 6220-00-945-4574
NSN 5990-01-478-8638
NSN 6220-01-207-8068
NSN 5998-00-879-7577
NSN 5985-01-157-9426
NSN 6685-00-373-3436
NSN 5996-01-496-8563
NSN 6145-00-056-2046
NSN 6320-00-116-3658