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 5945-00-647-3807
NSN 5910-01-036-5152
NSN 5965-00-100-1291
NSN 4140-00-469-6995
NSN 5905-01-524-2408
NSN 5925-00-113-5066
NSN 5835-00-198-4936
NSN 5945-00-814-0603
NSN 6105-00-112-0967
NSN 5998-01-170-9685
NSN 5925-00-081-9135
NSN 5960-01-424-1781