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 5920-01-442-8734
NSN 5905-01-556-4408
NSN 5960-00-248-3094
NSN 5930-00-838-3391
NSN 5930-00-078-8632
NSN 5965-01-055-0102
NSN 6620-01-462-5196
NSN 6320-00-731-6134
NSN 5999-00-633-2700
NSN 6150-01-031-7583
NSN 5920-00-087-8994
NSN 6240-00-432-0328