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 5960-01-390-7236
NSN 5905-00-387-5034
NSN 6240-00-840-3647
NSN 6685-01-429-8298
NSN 5990-01-037-1704
NSN 6220-01-499-4531
NSN 5835-01-156-5622
NSN 6620-00-105-3312
NSN 6150-01-535-6181
NSN 5925-01-236-6722
NSN 6685-01-439-8027
NSN 5935-01-577-9751