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 6150-01-205-3650
NSN 5996-00-495-3086
NSN 5930-01-245-9320
NSN 5920-01-451-4260
NSN 5835-00-253-3453
NSN 5960-01-558-7787
NSN 5975-01-115-3003
NSN 5835-01-560-8525
NSN 6650-01-275-8565
NSN 2925-01-032-3814
NSN 6150-00-387-3045
NSN 5950-01-485-0246