Properly fitted brush seals are essential for maintaining the performance and efficiency of aircraft hangar doors. A well-installed seal helps block debris, reduce air infiltration, and protect valuable aircraft and equipment from environmental exposure. However, even the highest-quality materials will underperform if measurements are inaccurate. At Hangar Door Parts, we provide durable, aviation-grade brush seals designed for long-term reliability, but achieving the best results starts with precise measurement and proper planning.

Why Accurate Measurement Matters

Brush seals are designed to create a consistent barrier along the edges and gaps of a hangar door. If the seal is too short, gaps will allow wind, dust, and moisture to enter the facility. If it is oversized or improperly fitted, it can create excessive drag, leading to premature wear on motors, rollers, and other moving components. Accurate measurements ensure a tight, effective seal without compromising door operation or increasing strain on the system.

Key Areas to Measure on Your Hangar Door

Before ordering replacement brush seals, it is important to identify all locations where sealing is required. Each section of the door may have different spacing and sealing needs depending on the door type and structure.

• Bottom Gap: Measure the distance between the bottom of the door and the floor across the full width. This gap can vary due to floor slope or wear over time, so take multiple measurements and use the largest value to ensure full coverage.

• Side Jambs: Measure the vertical gaps along both sides of the door. These areas are common entry points for wind and debris, especially in sliding and rolling door systems.

• Top Header: Measure the gap between the top of the door and the header. This is particularly important for large doors where structural movement or settling may create uneven spacing.

• Panel Joints (if applicable): For bi-fold doors, check between panel sections where air and debris may pass through during operation.

Step-by-Step Measurement Process

Accurate measurements require consistency and attention to detail. Using the right tools and method will ensure the brush seal performs as intended.

Start by using a reliable tape measure and record all dimensions in inches for precision. Measure each section of the door in multiple locations, especially for wide-span hangar doors where gaps may not be uniform. Always account for the largest gap when selecting brush length to guarantee full sealing coverage.

Next, determine the required brush height or bristle length. The brush should make consistent contact with the opposing surface without excessive compression. A slight overlap is ideal, as it maintains flexibility while still creating an effective barrier. Avoid choosing a brush that is too long, as this can create resistance during operation and increase wear on door components.

Finally, confirm the mounting surface. Whether the brush seal will be attached to the door frame, panel edge, or track system, ensure there is adequate space and structural support for secure installation. This step is critical for long-term durability and consistent performance.

Selecting the Right Brush Seal Material

Not all brush seals are built for the same conditions. Hangar Door Parts offers high-quality brush and weather seals designed for aviation environments, where durability and weather resistance are essential.

• Nylon Brush Seals: Ideal for general applications, offering flexibility and resistance to moisture and debris.

• Polypropylene Bristles: Provide excellent chemical resistance and durability in more demanding environments.

• Aluminum Retainers: Ensure secure mounting and long-term structural integrity, especially in high-cycle doors.

Choosing the right material depends on your climate, usage frequency, and exposure to elements such as wind, rain, and dust.

Common Measurement Mistakes to Avoid

Even small measurement errors can lead to poor seal performance. One of the most common mistakes is measuring only one section of the door and assuming uniform gaps across the entire span. Large hangar doors often have slight variations that must be accounted for.

Another issue is failing to consider door movement. A seal that fits perfectly when the door is closed may bind or wear prematurely during operation if there is not enough clearance. It is also important to avoid underestimating environmental exposure. In high-wind or high-moisture areas, a more robust seal with proper overlap is necessary to maintain effectiveness.

Why Choose Hangar Door Parts for Brush Seals

Hangar Door Parts specializes in aircraft hangar door components, offering high-quality brush seals engineered for durability, flexibility, and long-term performance. Our products are designed to withstand demanding aviation environments while maintaining consistent sealing performance over time. With fast and reliable shipping, we help facility managers and installers get the parts they need without delays. In addition, our expertise in hangar door systems ensures you receive the right solution for your specific application, helping you avoid costly downtime and inefficiencies.