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 4140-01-494-6121
NSN 5915-01-360-0677
NSN 5965-00-470-9521
NSN 6610-00-912-5039
NSN 6110-01-632-7238
NSN 5930-00-621-9983
NSN 6685-00-578-0974
NSN 5930-01-364-8044
NSN 6240-00-937-6083
NSN 5985-01-570-0751
NSN 5935-00-841-0178
NSN 5999-00-269-5320