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 6650-01-131-7233
NSN 6135-01-168-2944
NSN 5895-01-647-4141
NSN 5985-01-174-3324
NSN 7035-01-014-3808
NSN 6240-00-977-0485
NSN 5975-01-357-0196
NSN 6685-01-626-9032
NSN 6135-01-528-6896
NSN 5950-01-090-0789
NSN 5960-00-903-2852
NSN 6135-01-265-1384