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 6620-00-253-6329
NSN 2925-01-327-3069
NSN 6105-01-416-2043
NSN 6240-00-400-7980
NSN 5998-01-398-9909
NSN 6150-01-168-4642
NSN 5835-01-283-9691
NSN 6150-00-387-3045
NSN 5915-00-364-7791
NSN 5925-00-759-0925
NSN 7035-00-360-2008
NSN 6150-00-858-5116