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 5996-00-130-0841
NSN 6650-01-044-9860
NSN 5925-01-354-6097
NSN 5950-00-233-6800
NSN 5960-01-089-8155
NSN 5975-01-137-1798
NSN 6105-01-431-8998
NSN 2925-01-011-2325
NSN 6130-01-606-5295
NSN 5975-01-126-6588
NSN 6650-01-081-9749
NSN 6650-01-435-2994