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 5925-00-721-3206
NSN 6130-01-254-3260
NSN 6620-01-610-5081
NSN 6645-01-096-9719
NSN 5985-01-349-9226
NSN 5985-01-505-7465
NSN 6645-01-595-4375
NSN 2925-01-545-2717
NSN 5960-01-037-6570
NSN 6610-01-269-5437
NSN 6240-01-279-0552
NSN 5985-00-113-3417