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 5895-01-275-3092
NSN 4140-00-791-0500
NSN 5945-01-524-9410
NSN 6110-01-495-1158
NSN 6130-00-596-9565
NSN 6645-01-552-4570
NSN 6135-00-519-1325
NSN 6145-01-543-1491
NSN 5835-00-153-4100
NSN 5999-00-290-5898
NSN 5905-01-099-4679
NSN 5998-01-340-5644