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 6620-00-992-5876
NSN 6240-01-563-5578
NSN 6610-01-625-2926
NSN 6240-00-059-4637
NSN 6685-01-016-6251
NSN 6610-01-330-3912
NSN 5960-01-609-6565
NSN 6110-00-646-9079
NSN 5999-01-569-6513
NSN 6150-00-185-3293
NSN 6645-00-287-9192
NSN 5930-01-045-5333