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 5960-01-278-9394
NSN 5895-00-973-1731
NSN 6645-01-327-6896
NSN 5905-01-158-5549
NSN 5998-01-149-0586
NSN 6685-01-432-7156
NSN 5895-01-464-3537
NSN 5990-01-471-0494
NSN 5999-01-368-3371
NSN 5915-01-398-1672
NSN 5999-01-614-0925
NSN 6610-00-442-1537