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 6105-01-420-1019
NSN 2925-01-027-1293
NSN 5999-00-459-0712
NSN 6130-01-097-4484
NSN 5895-01-132-3779
NSN 5945-00-222-6712
NSN 5855-00-487-9691
NSN 6150-00-666-3635
NSN 5925-01-357-9402
NSN 6135-00-613-1068
NSN 6620-00-957-9325
NSN 5996-01-258-5888