Product Highlight: Bulb Seal

ELBEX • August 8, 2022
Product Highlight: Bulb Seal

At Elbex, our team produces a wide range of custom and standard rubber extrusions to fill needs in many different industries. Among these are bulb seals, which help provide maximum sealing power in an application. Here’s what you should know.

What is a Bulb Seal?

A bulb seal is actually comprised of two parts: a mounting mechanism and the bulb section, which tracks into a channel to fill voids or gaps. Bulb seals are also sometimes called trim seals because they are frequently used around doors and windows. A variety of materials can be used to manufacture bulb seals based on their operating environment and intended application to ensure they meet performance requirements.

Common Bulb Seal Applications

As previously noted, bulb seals are most often used to seal and insulate doors, hatches, and windows. This is especially common in residential construction, where bulb seals are used for weatherstripping. They are also used to seal off interior components in automobiles to protect them from water, dust, and other contaminants. Bulb seals are also used for doors and hatches for industrial mixing and drying equipment in pharmaceutical and food processing facilities. Their ability to effectively block water, contaminants, and extreme temperatures is vital in these processes.

At Elbex, our team can provide custom bulb seal designs as needed to meet the specific needs of your application. Our team’s extensive capabilities and experience can effectively meet nearly any design requirements to ensure that you get the lasting results you need. Contact us today to learn more and get started on your own project.

Extruded Rubber Bumpers: Cushioning the Impact with Elbex

By David Garman • August 22, 2025
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Custom Rubber Extrusion Design: Tailored to Perfection with Elbex's Expertise

By David Garman • August 15, 2025
It’s all too common for off-the-shelf-parts to fall short of what you need. This makes designing custom rubber extrusion profiles for specific applications an absolutely critical aspect of getting the precision and unique functionality you need for each application. As a premier provider of customized extrusion solutions, Elbex can provide custom rubber extrusion designs that are perfectly tailored to your needs. The Elbex Philosophy: Every Application Is Unique At Elbex, we understand that every application is unique. We actively listen to your specific project requirements so we can understand your exact needs. Whether you have a detailed drawing, a simple sketch for quoting, or even a physical sample for reverse engineering, we can use it as a baseline for getting started. With our team’s knowledge, we can then recommend the most suitable design, material, and manufacturing approach for your component. “Hands-On” Engineering: Your Dedicated Project Quarterback After you request a quote, we assign a dedicated engineering team leader (your "quarterback") to your project. This person takes the lead on your project with all communication and oversight to ensure timely and satisfactory completion. From plan visits and field support to in-depth tooling and engineering setups conducted at our facilities, your team lead will make it happen. Unmatched Resources for Customization and Efficiency Elbex offers a wide range of resources to help your project succeed. Our in-house custom tool and die design services lower costs and allow us to provide turnaround times of days, rather than weeks. Our experts will help you select the right materials to ensure proper performance for your specific application and environment. We also provide a variety of technical resources (as well as the expertise of our own team) to fine-tune new designs or troubleshoot issues. The Elbex Advantage: Why Tailored Solutions Excel Custom solutions always deliver better results than standard designs. With Elbex, you get precision and performance that are optimized for your application. We seek to be a proactive partner who will help you address design challenges, while also guaranteeing a high level of quality with our hands-on approach. This fully integrated in-house approach ultimately saves you time and money – even as you get better results. With our team’s unwavering commitment to designing custom rubber extrusion profiles for specific applications and our ability to deliver customized extrusion solutions, you can count on Elbex to provide the components you need. Contact us today to bring your next rubber extrusion project to life by calling 877-302-0423 or filling out our online RFQ form.

Extruded Rubber Expansion Joints: Mastering Movement with Elbex's Expertise

By David Garman • July 25, 2025
Thermal expansion, contraction, and vibration are persistent challenges in industrial and architectural structures. Left unchecked, these forces can cause significant structural damage – but rubber expansion joints can help. Custom-engineered extruded rubber expansion joints by Elbex offer superior performance and reliability to protect your structures. Understanding Extruded Rubber Expansion Joints Expansion joints play a vital role by reducing movement and vibration, as well as relieving stress caused by surface expansion or contraction. Rubber extrusions absorb movement to dampen vibrations and prevent damage to pipes, building materials, and other surfaces. The end result is greater stability and protection for the entire system. By forcing uncured rubber through a die and curing it in a 400°F salt bath, we can create fully cured, cross-linked, and durable extrusion profiles that address these needs in a variety of applications. Diverse Applications Across Industries Rubber expansion joints are used across many industries and applications, but they are most common in manufacturing and construction. In manufacturing, rubber expansion joints are used in transitions between two surfaces (such as in industrial piping systems), specialized uses like outgassing expansion joints in clean room ductwork, and more. In construction, movement joints provide structural stress relief and maintain structural integrity. These expansion joints keep structures in place while allowing necessary movement from natural expansion or contraction or even seismic activity. This improves the longevity of building materials and helps prevent damage that might otherwise occur. The Elbex Advantage: Customization and Comprehensive Support Working with Elbex for your rubber expansion joints provides several important benefits. Our design and engineering team brings decades of experience, allowing us to custom-design extrusions for any need. Our value-added services such as printing, cutting, splicing, taping, on-site silicone mixing and color matching, and in-house die tooling allow us to provide a rapid turnaround while meeting your precise specifications. Our team can also assist you with technical resources, design assistance, and even material selection to ensure the design and composition of your rubber expansion joint will deliver the performance you need. Our commitment to quality from start to finish will let you move forward with confidence. Elbex is your premier partner for designing and manufacturing custom rubber expansion joints that will safeguard your structures and systems from movement, vibration, and thermal change. Contact us today for design assistance or to discuss your specific extruded rubber expansion joint needs.