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 6145-00-603-2608
NSN 5945-01-588-8412
NSN 5960-00-485-0601
NSN 5905-01-357-6778
NSN 5915-01-054-3109
NSN 6105-00-059-5357
NSN 6645-00-155-2398
NSN 6320-00-682-3448
NSN 5996-01-628-8624
NSN 5925-01-024-9568
NSN 5990-00-258-0228
NSN 5990-01-327-1558