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 5835-01-360-0419
NSN 4140-00-259-2567
NSN 5910-01-652-0645
NSN 6220-01-204-3575
NSN 6610-01-164-2227
NSN 5930-01-584-7677
NSN 5950-01-247-8391
NSN 5960-00-502-5886
NSN 5855-01-138-3396
NSN 5996-01-268-1625
NSN 5945-00-935-5266
NSN 5985-01-367-2220