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 6610-01-375-9994
NSN 5905-00-080-9010
NSN 6240-01-099-6810
NSN 5990-01-013-8464
NSN 5910-01-003-8582
NSN 4140-01-417-2611
NSN 6320-01-021-6633
NSN 5998-01-464-1771
NSN 5950-00-946-2682
NSN 5925-01-280-4463
NSN 4140-01-468-6845
NSN 6685-01-610-5258