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 6610-00-227-8846
NSN 6105-00-621-1964
NSN 6240-00-078-9083
NSN 6645-00-853-0073
NSN 5950-01-359-2601
NSN 5975-00-485-4253
NSN 6240-01-446-2503
NSN 5990-01-608-6914
NSN 4140-00-893-2754
NSN 6135-00-209-6918
NSN 5925-01-340-7420
NSN 5925-01-328-3947