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 5925-00-689-4646
NSN 5910-01-455-7473
NSN 5920-01-377-5803
NSN 7035-01-068-3300
NSN 5965-00-342-5126
NSN 7035-01-496-5896
NSN 5985-00-125-7642
NSN 6240-00-469-2339
NSN 6620-01-487-8735
NSN 5910-01-350-4290
NSN 5915-01-202-6336
NSN 5985-01-359-4207