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    Door Perimeter Bulb Seal with T-Channel for Truck Caps

    Manufacturer: Starcraft
    Rubber seal for truck cap back door perimeter. Serves as a weather seal for perimeter of the truck cap, topper, camper shell door. Slide the "T" into the door channel to install, then trim to fit. 10 ft roll, select a different length if needed.
    SKU: TSD402202
    Manufacturer part number: 4137020000
    $19.99
    $14.99
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    Radius Door Bulb Seal w/ T-Channel for Truck Cap Rear Doors

    This 10 ft roll of radius door bulb seal w/ T-channel is designed to slide into the bottom track of aluminum-framed truck cap rear doors. Ideal for sealing gaps, cushioning door movement, and reducing wind and dust intrusion.

    Key Features

    • 1/4″ diameter bulb: Compresses to seal door bottom against cap track
    • 3/8″ total height: Bulb plus T-channel seated height
    • 3/16″ wide T-channel: Slides securely into track
    • Radius profile: Designed for smooth, curved installation
    • 10 ft length: Ideal for full-length or multiple short runs
    • OEM fit: Commonly used on truck caps, verify fit prior to installation

    Applications

    Perfect for:

    • Truck cap rear door bottom tracks with 3/16″ slot
    • Aluminum-framed doors on truck toppers, campers, and caps
    • Replacement seal for worn factory OEM bulb seals

    Technical Specifications

    Part Number 4137020000
    Length 10 ft (120″)
    Bulb Diameter 1/4″ (≈6 mm)
    Total Height 3/8″ (≈9.5 mm)
    T‑Channel Width 3/16″ (≈4.7 mm)
    Color Black
    Material Flexible rubber (EPDM/thermoplastic composite)
    Mounting Method Slides into 3/16″ channel in door bottom track
    Installed Use Trucks caps/rear doors with aluminum frames
    Application Tips Measure track slot width and depth before ordering

     

    Installation Instructions

    1. Clean the bottom track channel to remove dirt and debris.
    2. Cut the bulb seal to length appropriate for your door width.
    3. Align the T-channel with the track slot and press the seal in fully.
    4. Verify the bulb compresses evenly and holds securely in place.

    FAQs

    Will this fit my truck cap?
    It fits most aluminum-framed cap rear doors with a 3/16″ channel slot—measure to confirm compatibility.
    Is the bulb rigid or flexible?
    The bulb is flexible to conform and seal against uneven surfaces.
    Why 10 ft length?
    Provides full door width coverage (up to 60″) or can be cut into multiple runs.

    Radius Door Bulb Seal w/ T-Channel for Truck Cap Rear Doors

    This 10 ft roll of radius door bulb seal w/ T-channel is designed to slide into the bottom track of aluminum-framed truck cap rear doors. Ideal for sealing gaps, cushioning door movement, and reducing wind and dust intrusion.

    Key Features

    • 1/4″ diameter bulb: Compresses to seal door bottom against cap track
    • 3/8″ total height: Bulb plus T-channel seated height
    • 3/16″ wide T-channel: Slides securely into track
    • Radius profile: Designed for smooth, curved installation
    • 10 ft length: Ideal for full-length or multiple short runs
    • OEM fit: Commonly used on truck caps, verify fit prior to installation

    Applications

    Perfect for:

    • Truck cap rear door bottom tracks with 3/16″ slot
    • Aluminum-framed doors on truck toppers, campers, and caps
    • Replacement seal for worn factory OEM bulb seals

    Technical Specifications

    Part Number 4137020000
    Length 10 ft (120″)
    Bulb Diameter 1/4″ (≈6 mm)
    Total Height 3/8″ (≈9.5 mm)
    T‑Channel Width 3/16″ (≈4.7 mm)
    Color Black
    Material Flexible rubber (EPDM/thermoplastic composite)
    Mounting Method Slides into 3/16″ channel in door bottom track
    Installed Use Trucks caps/rear doors with aluminum frames
    Application Tips Measure track slot width and depth before ordering

     

    Installation Instructions

    1. Clean the bottom track channel to remove dirt and debris.
    2. Cut the bulb seal to length appropriate for your door width.
    3. Align the T-channel with the track slot and press the seal in fully.
    4. Verify the bulb compresses evenly and holds securely in place.

    FAQs

    Will this fit my truck cap?
    It fits most aluminum-framed cap rear doors with a 3/16″ channel slot—measure to confirm compatibility.
    Is the bulb rigid or flexible?
    The bulb is flexible to conform and seal against uneven surfaces.
    Why 10 ft length?
    Provides full door width coverage (up to 60″) or can be cut into multiple runs.