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A bulldozer with a rubber windshield gasket on the cab window

Trims & Seals for the Construction Industry

Looking for trim seals, locking window gaskets or heavy-duty weatherstripping for doors on heavy equipment? Find the construction equipment parts you need for this fast-paced and rugged industry by browsing Trim-Lok’s collection and learning about our custom capabilities.

A Trusted Construction Rubber Extrusion Manufacturer

Trim-Lok has been a reliable rubber and plastic extrusion manufacturer for more than 50 years. From off-the-shelf parts to custom solutions, our products are highly sought after by decision-makers and brands in the construction industry, as well as industries such as marine, automotive, and industrial/manufacturing. Backed by premium design and engineering expertise, we can work directly with you to engineer, prototype and manufacture a solution that meets your specifications and provides the durability you need on construction sites.

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Construction Application Benefits

Our construction windshield gaskets, rubber edge trims, and trim seals can help you achieve a variety of application benefits:

  • Durability: Provide flexibility and accommodate harsh movements on construction sites without shifting
  • Comfort: Reduce noise and vibration transmitted through construction cabs and windshields, making for a more comfortable job
  • Protection: Decrease contact with dirt, moisture, and weather with construction rubber edge trim or plastic edge guards
  • Cost-effectiveness: Avoid costly repair jobs after damage with increased protection from trim molding

Construction Equipment PartsA rubber trim seal creates a weather-tight seal between the cab door and the jam

Worksites require reliable heavy-equipment vehicles to get the job done. For years, Trim-Lok has supplied manufacturers in the construction industry, such as John Deere and Caterpillar, with windshield gaskets, high-heat seals and edge trims. Our parts ensure a tight seal against dirt, moisture and weather. With Trim-Lok, you get quality products designed to help you maintain safe, clean and secure heavy equipment.

Windshield Gaskets

The cabs on excavators or Bobcats require windshields and side windows for complete visibility all the way around the machine. From dry, dusty worksites to heavy rainstorms, working environments can be challenging for equipment operators—but their environment inside the cab should remain safe and secure.

That’s why Trim-Lok designs weather-tight locking windshield gaskets that fit securely into place between the substrate and the glass. Our one-piece locking gasket and two-piece locking gaskets resist severe weather, sunlight, pressure and aging. EPDM rubber provides excellent stability and heat resistance, making it an ideal choice for the construction industry.

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Rubber Edge TrimsRubber edge trim used for construction equipment parts

Trim-Lok’s rubber edge trims provide an excellent seal for sideview mirrors on construction work trucks, dump trucks, backhoes and graders. When terrain is unpaved, rocky or rugged, you can rest assured that Trim-Lok’s rubber edge trims hold sideview mirrors steady and in place. Available in neoprene or dense EPDM rubber, our rubber edge trims and bulb trims are effective in extreme weather and temperatures that range from -20°F to 158°F.

Customize Your Edge Trim

Trim Seals

Heavy equipment manufacturers use our trim seals, clip extrusions and flap seals to weatherproof a variety of applications for construction equipment and machinery. Trim seals are the fastest and easiest way to create a finished edge and protect against weather damage. Use as heavy-duty weatherstripping for doors to seal the door and jam securely.

With a strong, gripping tongue and individual metal clips that retain a permanent grip, our trim seals stay in place in extreme temperatures and weather conditions common at worksites. We offer an optional butyl or hot-melt adhesive sealant for a stronger grip and to prevent seepage.

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Office Building & Road Construction SuppliesConstruction industry heavy equipment operators install a new asphalt road

Major producers of building and construction supplies turn to Trim-Lok for high-quality, secure trims and seals to match their desired application. For example, some Trim-Lok customers use rubber edge guards to safely ship fragile items, such as glass or windows, to building sites for installation. Others use custom rubber trim as concrete expansion joint spacers in the road construction industry. Whether you need custom seals and trims for shipment or installation, Trim-Lok is here for you.

Edge Trim for Safe Shipping

Though our rubber edge trim is designed for long-term and reliable use, some customers find it valuable for adding a temporary layer of protection around glass windows during shipment to construction sites for warehouses or office buildings. Rubber edge trim provides a soft, flexible cushion that protects sharp edges from contacting other items during transit and helps ensure windows arrive at the building site undamaged. Trim-Lok understands and appreciates unique use cases and works with you to design a custom solution to meet your exact requirements.

Concrete Expansion Joint Rubber SpacersA rubber expansion joint for concrete roads from the leading rubber extrusion manufacturer

If you need spacers for concrete walls, Trim-Lok provides custom rubber extrusions to place between concrete expansion joints that ensures a watertight seal and minimizes cracking and damage. The rubber allows for the concrete to expand and contract with temperature and humidity changes, without affecting the quality or stability of the rubber trim.

Materials & Secondary Operations

When you’re looking for high-heat seals or trims that resist oil and chemicals, we recommend choosing materials like neoprene, nitrile or silicone. Use our dual durometer material in high-heat areas, such as under a hood or near a motor. These heavy-duty materials are ideal for construction equipment and supplies used for applying asphalt during highway construction.

In addition to a variety of specialized materials, Trim-Lok offers secondary operations to complete your part, such as cutting to length and bonding. Contact us to learn how we can help you meet pricing and application goals for your construction industry application.

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Try Before You Buy

Not sure if a product is right for you? Request a free sample to see our products firsthand before you place your order.

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Construction FAQs

+ Can you accommodate specific trim, seal or gasket requirements for construction applications?

Our team has a wide array of skills sets and deep industry knowledge. We are prepared to solve your unique construction challenges and create efficient experiences. We’ll work closely with you to determine your goals and exact requirements.

+ What are your capabilities in producing specific rubber and plastic extrusion, seal and trim products for construction equipment?

For over 50 years, we’ve honed our custom product and design capabilities to ensure we bring industry-specific expertise to the table to meet and solve your challenges head on. We work to accommodate your specific needs through a variety of in-depth capabilities:

  • • On-site customer reviews of the problem
  • • Engineering design and development using the latest in 3D CAD software and FEA
  • • Reverse engineering as required
  • • Secondary design processes, such as splicing, coating or notching
  • • State-of-the-art rapid prototyping techniques
  • • Materials, colors and compounds to match customer requirements
  • • Rigorous quality control
  • • On-site fit trials of first articles

+ Are you able to accommodate custom requirements for the construction equipment industry for rubber and plastic extrusion, seal and trim products?

As the leading plastic and rubber extrusion manufacturer, we look for every opportunity to provide the unique methods you require, such as:

  • • Mitered corners and frame assemblies
  • • Film splicing
  • • Slip coating
  • • Custom color matching
  • • Notching, holes or special cut outs
  • • O-rings
  • • In-line printing
  • • Injection molded corners
  • • Pressure-sensitive adhesive (PSA) tape backing

+ Can you provide samples of your rubber and plastic extrusion, seal and trim products for us to evaluate?

You can request a free sample of our rubber seals and plastic trims before you place a bulk order or contact us for a custom solution

+ Can you provide information on packaging and shipping options for rubber and plastic extrusion, seal and trim products?

Trim-Lok can provide personalized packaging options for your custom trim molding, extruded rubber seals, custom construction trims and more. Our custom packaging options include:

  • • Custom boxing
  • • Custom reels
  • • Custom bagging
  • • Header cards for retail
  • • Private label
+ Do you offer any warranties or guarantees for your rubber and plastic extrusion, seal and trim products?
Trim-Lok, Inc. warrants all products to be free from defects in material and workmanship for a period of ninety (90) days from date of purchase. This warranty does not include damage to products resulting from accident, misuse, improper installation or storage, and unauthorized alterations.
Learn more about our product warranties.


+ What are your delivery options for rubber and plastic extrusion, seal and trim products for construction equipment?

We provide timely and cost-efficient shipping from our West Coast and Midwest manufacturing facilities. Most in-stock materials and products can ship on a same-day or next-day schedule.