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 5905-01-571-3566
NSN 4140-00-045-8117
NSN 5965-01-437-5934
NSN 5975-00-644-4972
NSN 5999-01-260-5856
NSN 6105-01-370-4267
NSN 6685-01-548-6012
NSN 5905-00-251-2334
NSN 5855-00-912-3885
NSN 5985-00-409-5604
NSN 5925-01-469-6667
NSN 6610-01-482-4630