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 6685-01-018-6768
NSN 6135-01-422-1440
NSN 6240-00-403-9849
NSN 6240-01-206-4809
NSN 5996-01-568-2370
NSN 6150-00-590-3454
NSN 5855-01-606-8278
NSN 6320-00-731-6134
NSN 5855-01-394-3688
NSN 6645-01-023-8724
NSN 6685-00-623-9577
NSN 5985-01-492-4280