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 6620-01-207-0667
NSN 4140-01-083-5870
NSN 6620-01-028-6374
NSN 6620-01-329-6497
NSN 5935-01-576-2860
NSN 5990-00-230-8981
NSN 6685-00-533-5971
NSN 6610-01-459-1951
NSN 6645-01-540-7989
NSN 6645-01-431-0732
NSN 7035-01-106-3476
NSN 6220-00-165-7095