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 5960-01-442-9304
NSN 6610-01-380-9612
NSN 6645-00-646-6631
NSN 6685-00-934-8676
NSN 5855-01-020-7982
NSN 5920-00-786-8241
NSN 5990-01-577-2120
NSN 5915-01-442-6050
NSN 5990-01-565-2226
NSN 5930-01-518-2561
NSN 6240-00-913-4243
NSN 6620-01-010-7337