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 6650-01-352-7111
NSN 5925-00-248-5734
NSN 5835-01-099-1514
NSN 5960-01-178-7500
NSN 5950-00-127-4520
NSN 7035-01-440-8877
NSN 5965-01-140-9446
NSN 5855-00-973-5717
NSN 5965-01-010-7428
NSN 5950-01-473-5695
NSN 5990-01-084-8330
NSN 2925-01-254-3068