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 6620-01-431-9176
NSN 5915-00-952-9015
NSN 5975-01-420-9539
NSN 5920-00-602-7626
NSN 5855-00-405-4532
NSN 5905-00-276-8597
NSN 7035-00-215-3272
NSN 5945-00-257-8016
NSN 5965-00-728-2960
NSN 4140-01-519-9343
NSN 5985-01-424-1097
NSN 5998-01-299-1565