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 5985-01-321-4050
NSN 6130-00-198-4997
NSN 6145-01-561-1816
NSN 5960-01-201-6316
NSN 5985-00-166-6623
NSN 5996-01-633-7979
NSN 5925-01-271-3300
NSN 6145-01-527-2528
NSN 5925-00-064-9873
NSN 5985-01-579-3450
NSN 5925-01-461-8378
NSN 6610-01-016-3566