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About Us

The Sealmax brand started in 2000; however, we have been manufacturing weatherseal and weatherstripping since 1931. Originally doing business as Schlegel Canada Inc., Sealmax has undergone many changes since then, but one thing remains the same — quality products for your customer's home and family.

Sealmax is a wholly-owned subsidiary of Henniges Automotive, a global leader in automotive sealing systems.

Sealmax - A division of Henniges Automotive


We offer weatherstripping products for Professionals and Retrofitters:

Company Highlights

Sealmax – Oakville, Ontario, Canada
Number of Employees – 200
ISO 14001 certified
ISO 9001 certified
Energy Star® trade ally
Member of Fenestration Canada

Sealmax is a division of Henniges Automotive