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 5985-00-257-5641
NSN 6135-01-142-6456
NSN 5835-01-090-0328
NSN 6150-01-453-8892
NSN 5950-01-437-8572
NSN 5999-01-382-3785
NSN 6150-00-700-0910
NSN 5855-01-049-0175
NSN 5950-00-131-0492
NSN 5998-00-555-6318
NSN 6110-01-122-5916
NSN 6130-01-233-1616