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 5930-00-153-1400
NSN 6135-01-265-1384
NSN 2925-00-355-5130
NSN 4140-00-393-1707
NSN 5996-00-941-7542
NSN 6105-00-181-9774
NSN 5998-01-184-3633
NSN 4140-01-422-4223
NSN 5895-01-464-1609
NSN 5835-00-949-3018
NSN 5905-01-290-2348
NSN 5998-01-508-7966