Where Craftsmanship Meets Technology
At Seneca Foundry, making top-quality gray iron and ductile iron castings isn’t just what we do, it’s who we are. With over 100 years of experience behind us, we have learned how to blend old-school craftsmanship with today’s most advanced technology to create reliable cast iron parts that meet the demands of modern industries. From our dedicated team to our high-tech equipment, everything we do is built around delivering precision, quality, and care.
Proudly Casting Iron in Iowa Since 1909
Seneca Foundry has called Webster City, Iowa home for well over a century. As a family-owned business, we’ve grown alongside our community and the cast iron industry, holding tight to the values that got us here: integrity, innovation, and hands-on service. Our long history is not just something we’re proud of; it’s what pushes us to stay at the forefront of ductile and gray iron casting technology, every single day.
Iron Casting Equipment That Powers Precision
To make castings that perform in the real world, we invest in equipment that delivers consistency, accuracy, and efficiency. Here’s a look at what keeps our cast iron foundry running strong:

Cast Iron Molding Equipment
Hunter HMP-10 – Flask Size: 14" x 19"
Hunter HMP-20 – Flask Size: 20" x 24"
Hunter Linear Handling (HLH) Line

Induction Furnaces
Two Ajax 2-ton Induction Furnaces

Core Equipment
CB22 (Quantity: 2)
Dependable D100 & D200
Redford HS16
Redford Core Blower #4

Finishing Equipment
Pangborn Shot Blast
Two Sinto Automatic Grinders
Three Cincinnati Grinders
Wheelabrator – 14 cubic feet
Tabor Cutoff Saw
Electronic Toledo Weigh/Count Scale
This setup ensures each casting is finished cleanly and accurately, ready to perform right out of the box.

Cast Iron Heat Treatment Processes
Annealing
Normalizing
Stress Relief
These treatments strengthen the metal and improve long-term performance under stress
Built on a Culture of Quality
We do not take shortcuts, and we do not expect our clients to settle for anything less than excellent. Our Total Quality Management (TQM) system ensures continuous improvement across everything we do, from engineering and production to inspection and delivery.
Serving the Industries That Build the World
Our castings support customers across key sectors across the U.S. and beyond, including:
- Agriculture
- Automotive
- Construction
- Energy
- And more…
Whether you’re rebuilding a tractor or launching a new product line, we can help you get the parts you need when you need them.
Why Work With Seneca Foundry?
- 100+ Years of Experience – We have the talent and experience to produce superior products
- Expert Team – Skilled professionals who know the ins and outs of iron.
- Advanced Equipment – Machinery that brings your project to life with precision.
- Custom Solutions – We do not just make castings, we solve problems.
- Unmatched Quality – Our quality control standards are as solid as our castings.
Contact Seneca to Discuss Your Project
If you're looking for a foundry that treats your project like it matters, because it does, get in touch with us. Whether you need a simple quote or just want to talk through options, our cast iron experts are here to help.