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 5985-01-489-7056
NSN 5945-01-454-5725
NSN 6150-00-647-0717
NSN 5960-00-287-9932
NSN 7035-01-377-6255
NSN 5996-00-503-5306
NSN 2925-00-480-9068
NSN 6145-00-973-5628
NSN 5990-00-087-6177
NSN 6220-00-712-1779
NSN 5965-00-113-9748
NSN 5996-01-284-8835