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 7035-01-313-6973
NSN 2925-01-209-9245
NSN 6135-01-496-5810
NSN 4140-00-109-5137
NSN 6110-00-377-3220
NSN 6150-01-331-5686
NSN 6645-01-051-7447
NSN 5975-00-209-6498
NSN 6650-01-048-6757
NSN 5910-01-243-9014
NSN 4140-01-112-7786
NSN 6240-01-236-4423