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 5960-01-240-3266
NSN 5975-00-900-4013
NSN 5996-01-257-8179
NSN 6220-01-267-7945
NSN 5925-00-074-9180
NSN 5999-01-418-6165
NSN 6645-00-033-8714
NSN 5985-00-648-2081
NSN 2925-00-048-7172
NSN 5985-01-189-5721
NSN 5998-00-473-2035
NSN 5915-01-244-3616