Frequently Asked Questions
We’ve compiled answers to some of the most common questions about Electro-Seal’s manufacturing services, products, and capabilities. Whether you’re exploring a new supplier or looking to place a custom order, this page will give you a quick overview of who we are and how we work.
FAQS
Electro-Seal is recognized as a North American leader in fused glass-to-metal products, especially hermetically sealed sight glasses. Our reputation has been built on decades of engineering excellence, product reliability, and industry trust since 1946.
We serve high-demand industries with both high- and low-pressure sight glass solutions, offering American-made quality, custom manufacturing capabilities, and fast lead times. Our products are used worldwide in critical environments — from pharmaceutical plants to aerospace systems — because they work, and they last.
Electro-Seal products are trusted across a broad range of industries, including:
- Food & Beverage Processing
- Dairy and Sanitary Equipment
- Pharmaceutical Manufacturing
- Petroleum & Chemical Systems
- Construction Equipment
- Aerospace & Marine Applications
- Power Generation & Heavy Machinery
- OEM Manufacturing and Custom Assemblies
Our precision machining, sight glass engineering, and specialty components are tailored to withstand the pressures, temperatures, and compliance demands of these fields.
Absolutely. Custom manufacturing is one of Electro-Seal’s core strengths. Whether your application involves a unique material, shape, thread pattern, or pressure requirement, we can design and manufacture a part specifically for you.
Our engineers collaborate closely with your team to deliver a component that meets your exact needs — whether it’s a prototype, a limited run, or full-scale production.
Electro-Seal balances precision and affordability through:
- Efficient use of multi-spindle screw machines and CNC lathes
- Streamlined production workflows to reduce waste
- Scalable manufacturing that supports both short runs and high-volume orders
- In-house operations to minimize outsourcing costs and delays
This allows us to offer competitive pricing without cutting corners on quality — making us a cost-effective choice for OEMs, MRO buyers, and custom part developers.
Electro-Seal’s facility includes:
- 29+ multi-spindle screw machines for fast, repeatable part production
- 17 CNC lathes for tight-tolerance, custom-machined components
- In-house heat treating, coating, engraving, and secondary operations
- Engineering support for design, prototyping, and reverse engineering
- Quality control and inspection for every part shipped
We machine a wide range of metals and plastics, handle simple and complex geometries, and support industries where performance is non-negotiable.
Don’t See Your Question Here?
We’re happy to help. Whether you’re an engineer, buyer, or new customer, our team is here to answer your specific questions or provide detailed technical support.