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 6105-01-366-7436
NSN 2925-01-454-2046
NSN 5950-01-281-0587
NSN 6240-01-401-5340
NSN 5945-01-260-9321
NSN 5925-01-465-0601
NSN 5925-00-862-0142
NSN 5930-00-066-6977
NSN 5910-01-529-4844
NSN 6135-01-231-4809
NSN 5960-00-822-2571
NSN 6150-01-360-5880