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 5925-00-244-2834
NSN 6220-01-203-7555
NSN 4140-01-147-4513
NSN 5998-00-218-1360
NSN 5998-01-549-2389
NSN 7035-01-113-6492
NSN 6620-01-593-0817
NSN 6645-01-426-8621
NSN 5925-01-451-5140
NSN 6220-01-124-4904
NSN 6610-01-137-5959
NSN 5975-01-245-9950