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 6220-01-296-0860
NSN 6320-01-484-7734
NSN 5925-01-147-5725
NSN 5935-00-059-5678
NSN 5905-01-474-8463
NSN 5999-00-864-9965
NSN 6220-01-046-4729
NSN 5895-01-371-2431
NSN 6220-01-225-7830
NSN 5855-01-455-0254
NSN 6110-01-265-1080
NSN 6150-00-730-3256