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 5895-01-428-4494
NSN 5925-00-942-0350
NSN 6105-01-387-6073
NSN 5996-00-221-7663
NSN 5920-01-414-6983
NSN 5925-01-167-8144
NSN 6110-00-975-2986
NSN 6130-00-112-0716
NSN 5915-00-862-8226
NSN 5960-00-699-8146
NSN 4140-00-985-0182
NSN 5985-00-233-5773