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 6145-01-088-7495
NSN 5905-00-063-2323
NSN 5895-01-415-5786
NSN 5990-01-443-2931
NSN 5920-01-341-3941
NSN 5945-00-159-7628
NSN 5945-01-413-1282
NSN 5950-01-167-8549
NSN 5930-01-400-6126
NSN 5930-01-080-0835
NSN 6610-01-391-5092
NSN 6650-00-518-5194