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 6650-00-210-4399
NSN 6620-01-367-0844
NSN 5910-00-856-8148
NSN 6645-01-432-7943
NSN 5895-01-063-4688
NSN 2925-01-577-0004
NSN 5998-00-903-9182
NSN 6105-00-572-2858
NSN 5945-00-402-5073
NSN 5895-00-973-4940
NSN 4140-00-287-4462
NSN 5960-01-412-9474