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 5925-01-618-2646
NSN 4140-01-374-8467
NSN 5855-01-386-7323
NSN 6220-00-643-4045
NSN 6135-00-877-1659
NSN 5985-01-553-8626
NSN 6610-01-025-4718
NSN 5975-01-631-2957
NSN 6105-00-500-7225
NSN 6105-00-197-8671
NSN 4140-01-346-5350
NSN 6610-01-433-2219