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 5835-00-409-8355
NSN 5965-00-905-5197
NSN 5915-01-481-6207
NSN 5895-01-237-3186
NSN 5895-01-197-5009
NSN 5905-01-348-7084
NSN 6685-01-218-8199
NSN 5935-01-436-4336
NSN 5996-01-613-1207
NSN 5985-01-218-5643
NSN 5950-01-212-0000
NSN 6150-01-172-9896