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 5895-00-492-8678
NSN 6685-01-497-1375
NSN 6620-01-422-2775
NSN 5935-01-229-8752
NSN 7035-01-452-4306
NSN 5996-00-277-7384
NSN 4140-00-393-1707
NSN 5985-00-731-8680
NSN 5930-01-571-3575
NSN 6145-00-043-2874
NSN 6685-01-411-5749
NSN 6220-00-560-4012