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 5895-01-210-2119
NSN 6610-01-357-5957
NSN 5895-01-100-1825
NSN 5905-01-409-2951
NSN 2925-01-354-1752
NSN 6620-00-008-3280
NSN 5835-01-018-6294
NSN 5996-01-392-4659
NSN 5945-00-045-5266
NSN 4140-00-907-6967
NSN 6150-01-076-9377
NSN 6650-01-437-8852