About Us
a history of innovation
Since our founding in 1946 by Sam Stryffeler as Durolet Manufacturing Company—later becoming Red Seal Electric Company in 1952—we have been at the forefront of innovation in electrical insulation and composite material fabrication.
Our first product offerings were proprietary electrical insulation devices for the open wiring systems utilized in steel mills. Since that time, Red Seal has grown into a full-scale manufacturing and machining operation, serving industries worldwide.
Wherever thermal, electrical, or mechanical insulation is required, Red Seal delivers solutions that set the industry standard. Our extensive in-house capabilities allow us to deliver complex, custom-machined parts with tight tolerances.
As a company committed to excellence, we hold Certificate No. 02.168.2 ISO 9001:2015 certification for contract manufacturing and distribution of mineral, fiberglass, plastic, refractory, and ceramic insulation materials.
It's not just about materials;
it's about partnerships.
We're not just a supplier;
we're your trusted partner in insulating material fabrication.
With a 98% on-time delivery, we keep our promises so you can meet your deadlines.
A Global Partner in Precision Fabrication of Insulating Materials
Precision-fabricated composite materials that enhance performance, safety, and efficiency in mission-critical applications.
INDUSTRIES served INCLUDE:
Food and Material Handling
Electro-Magnet Manufacturing and Repair
Rubber Molding
Power Generation and Transmission
Induction Heating
Water Treatment
Glass Manufacturing
And Many More
What sets red seal apart
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Unmatched Expertise
Decades of experience in high-performance insulation materials and precision machining.
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Comprehensive Inventory
A vast selection of over 70 stocked materials ready for rapid production.
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Advanced Equipment
Cutting-edge equipment for high-quality custom machining and tight tolerances.
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Rapid Delivery
Streamlined processes to move from quote to shipment quickly with 98% of on-time delivery.
Trade Groups & Affiliations
