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 6110-01-432-2442
NSN 5905-01-437-5498
NSN 5930-00-205-2682
NSN 6650-00-482-2019
NSN 7035-01-107-2811
NSN 6110-01-158-8008
NSN 5910-01-646-1648
NSN 5965-01-205-6249
NSN 6110-01-193-1803
NSN 5855-01-484-9948
NSN 5950-01-327-3476
NSN 5915-00-609-6768