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 6135-01-222-0703
NSN 5975-01-359-2679
NSN 5915-00-244-1702
NSN 5998-00-661-0380
NSN 4140-00-306-0886
NSN 5835-01-576-9013
NSN 5985-00-821-5636
NSN 6320-01-281-6028
NSN 5950-00-525-2931
NSN 2925-01-185-9144
NSN 5996-00-168-7651
NSN 5960-01-570-8605