HIGH QUALITY INJECTION MOLDED PLASTIC PRODUCTS SINCE 1962.
PLASTIC INJECTION MOLDING
Our comprehensive plastic injection molding capabilities ensure you’ll always enjoy high quality, efficient production for any project.
ENGINEERING & MATERIALS
Find out how KASO’s engineering and materials selection knowledge have made us a preferred vendor throughout the Northwest.
VANGUARD FENESTRATION
KASO’s injection molded window and door hardware is designed and manufactured for quality, performance, and aesthetics.
Latest News From KASO
How We Can Make Injection Molding More Sustainable
If you use injection molding to produce plastic parts and components, it's important to consider the ways in which your production affects the environment and what you can do to minimize the effects it has on the world [...]
Serving the Greater Northwest
KASO Plastics has served the greater Northwest with high quality plastic injection molding and engineering for nearly 60 years. In that time, we’ve learned a thing or two about what it takes to keep customers coming back. Better service, the most modern technology and processes, and close attention to the small details all spell quality for your finished products.
Serving Washington, Oregon, California, and Idaho