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 5835-01-342-2654
NSN 6135-01-387-0754
NSN 6220-00-928-6163
NSN 5950-01-476-3236
NSN 6620-01-216-4901
NSN 6130-00-995-9095
NSN 5975-00-496-3433
NSN 5915-01-487-3883
NSN 5935-00-148-1265
NSN 5895-01-288-9007
NSN 5975-01-170-1282
NSN 6610-01-376-9199