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 5935-01-527-9153
NSN 5998-01-484-9071
NSN 6130-01-184-8187
NSN 5960-01-203-3619
NSN 5985-01-655-6868
NSN 5895-01-119-3226
NSN 5925-00-262-6087
NSN 5925-00-989-8288
NSN 5950-00-838-0663
NSN 5975-01-084-9181
NSN 5965-00-144-2543
NSN 6645-00-429-0172