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 6150-01-029-2146
NSN 6610-01-492-6515
NSN 5975-01-367-1859
NSN 5905-00-420-1484
NSN 5935-01-301-2590
NSN 5985-01-296-0670
NSN 5905-01-434-4050
NSN 6145-01-383-9148
NSN 5935-00-156-1182
NSN 4140-01-269-7911
NSN 6150-01-054-0918
NSN 2925-00-684-7708