Trim-Lok
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About Trim-Lok
Trim-Lok has been a trusted name in plastic and rubber trims and seals since its founding in 1971. What started as a one-man operation in a small machine shop has, over the decades, grown into a globally recognized manufacturer with facilities in Buena Park, California and a state-of-the-art production plant in Elkhart, Indiana. That American-made heritage remains central to the brand's identity — every product that leaves a Trim-Lok facility reflects over 50 years of accumulated expertise in rubber and plastic extrusion.
What Trim-Lok Makes
At its core, Trim-Lok specializes in extruded rubber and plastic profiles designed to seal, protect, and finish edges across a wide range of industries. Their catalog spans edge trims, trim-seals, bulb seals, locking gaskets, sponge rubber seals, and weatherstripping — available in an extensive variety of shapes including D-profiles, P-profiles, U-channels, T-shapes, and fully custom configurations. Materials include flexible PVC, EPDM rubber, neoprene, silicone, and co-extruded compounds, each chosen for durability in demanding environments.
One of the brand's hallmarks is its automotive and vehicle trim lineup — a go-to resource for anyone restoring, upgrading, or manufacturing trucks, trailers, work vehicles, and recreational vehicles. Trim-Lok's edge trims and trim-seals are engineered to guard against moisture, wind, dust, noise, and extreme temperature swings, making them equally at home on a truck bed cover, an RV storage compartment door, a boat hatch, or an automotive window channel.
Engineering & Customization
Beyond its extensive off-the-shelf catalog, Trim-Lok is well regarded for its custom extrusion capabilities. Using 3D CAD software, finite element analysis (FEA), rapid prototyping, and in-house lab testing, the company's engineering team can develop precision profiles to exact customer specifications. Color matching, cut-to-length finishing, O-ring fabrication, and other secondary operations are all available, making Trim-Lok a comprehensive partner for both small repair projects and large-scale manufacturing programs.
The brand's client roster spans industries and applications — from heavy-equipment giants and aerospace to automotive OEMs and marine fabricators — a testament to the consistency and reliability of their products.
Why Enthusiasts and Builders Choose Trim-Lok
For the hands-on builder, restorer, or fleet maintainer, Trim-Lok products offer a straightforward value proposition: precise fit, long-lasting materials, and a professional finish. Their rubber and PVC trims resist UV degradation, chemicals, and harsh weather conditions, meaning a seal installed today should still be performing years down the road. Whether you need a drip edge for a door frame, weatherstripping for a camper shell, or a protective edge trim for a custom fabrication project, Trim-Lok's depth of catalog and customization options make it a reliable first stop.