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 5950-01-509-3603
NSN 6645-01-483-1331
NSN 7035-00-631-3782
NSN 5945-01-236-8865
NSN 5895-01-588-3488
NSN 6320-01-036-2598
NSN 5996-01-139-2843
NSN 5930-00-073-6725
NSN 5960-01-398-9538
NSN 7035-01-183-7550
NSN 5990-01-241-2479
NSN 6320-00-242-3300