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 4140-01-244-6737
NSN 5905-01-085-5692
NSN 5835-01-488-6678
NSN 6240-01-432-0819
NSN 6610-01-266-0880
NSN 6145-01-215-3869
NSN 5925-01-110-6329
NSN 5930-01-380-7872
NSN 5935-01-418-1014
NSN 5835-00-461-3342
NSN 6645-01-179-0243
NSN 5920-01-515-0183