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.

By Melissa Nichols June 26, 2026
When you’re waiting on rubber extrusions, few things can become more frustrating than project delays caused by external vendors. Working with a manufacturer that relies on external vendors is rarely effective — which is why at Elbex, in-house tooling for custom rubber extrusions is our secret weapon. By providing custom tooling solutions for rubber profiles entirely in-house, we can deliver the results you need in a faster and more efficient way. Here’s how this approach makes a difference. From Sketch to Steel Our process starts with die design. The die is the blueprint that is used to manufacture the final part. With in-house die design, our engineers and toolmakers work together in the same building, preventing miscommunications, delays, and other potential issues. This also gives us total control over the quality of the steel and the precision of the cut used in die design. We can move forward with manufacturing knowing that everything will be done properly. Speed and Cost Savings for You By handling our rubber extrusion tooling services in-house, we’re able to produce a die in days, rather than weeks. That makes a huge difference for your project lead time compared to companies that outsource! Keeping everything in-house also lowers our own overhead for materials, transportation, and labor. We’re then able to pass these savings on to you so you can make better use of your manufacturing budget. Solving Complex Problems with Custom Tooling Most importantly, doing everything in-house allows us to develop custom tooling solutions for rubber profiles, even with difficult projects. In-house tooling allows us to troubleshoot difficult designs and create complex shapes that generic outsourced dies can't handle. By tuning our dies to the specific materials that will be used for your project, we can ensure a perfect product run every time. You can have confidence that everything will be done right the first time. By working with Elbex, you enjoy a streamlined, expert-led path that takes you from your initial concept to finished custom rubber extrusion in a way that fits your schedule. Send us your drawing or physical sample, and watch our in-house team get to work! Contact us to learn more.
By Melissa Nichols June 19, 2026
“Bumps and bruises" are inevitable in busy industrial environments. But whether these incidents cause major damage to equipment and infrastructure often depends on whether or not you use extruded rubber bumpers. Impact-resistant rubber bumpers for manufacturing facilities provide a high level of protection against collisions, ensuring that such incidents don’t lead to even bigger problems. With custom rubber bumpers from Elbex, you can have even greater confidence that your equipment, vehicles, and infrastructure are properly protected. The Versatility of Extruded Protection Not all rubber bumpers are created equal. At Elbex, we use the rubber extrusion process, which allows us to produce rubber bumpers in long, continuous lengths. The curing that rubber components go through during rubber extrusion provides superior linear strength and durability when compared to molded alternatives, especially for lengthy bumpers. This process allows us to produce rubber bumpers for a wide range of applications. We can produce bumpers for loading dock protection in mass transit, or to protect docks and boat hulls in the marine industry. We can even produce custom bumpers to protect expensive machinery from forklift or trolley impacts. Designed to Take the Hit For industrial rubber bumpers, few things are more important than the right material. That’s why we use EPDM as our material of choice for these applications. EPDM’s strong abrasion resistance helps it withstand the wear and tear of harsh industrial environments. In addition, these impact resistant rubber bumpers for manufacturing absorb the energy of collisions. This helps them reduce vibration and structural stress on the equipment that is being protected, in addition to preventing surface-level scratches. Custom Profiles for Specific Risks The combination of the rubber extrusion process and our team’s industry expertise enables us to create heavy duty rubber bumpers for industrial equipment in a wide range of shapes and lengths. Whether you need D-sections, U-channels, or something else entirely, we’ll help you get the right fit. And with our salt-bath curing process, you can expect continuous quality and durability from end to end. A small investment in high-quality bumpers can help you save thousands in repairs to industrial structures and equipment. With Elbex, you’ll get the customized level of protection your facility needs. Contact us today to learn more about our capabilities or to request a quote for your facility.
By Melissa Nichols June 12, 2026
From the dishwasher to the refrigerator, we rely on our home appliances every day. For manufacturers, providing the consistent performance your customers want often depends on a small component — appliance rubber seals. Quality rubber gaskets for appliances can make all the difference between a high-end machine and one that fails. With silicone rubber extrusions for appliance applications from Elbex, you can achieve the level of quality your products need. Why Precision Matters in Your Kitchen and Laundry Room Appliance rubber seals are vital for containing air, heat, and water in the kitchen and laundry room. This common need is shared by refrigerators, ovens, dishwashers, and laundry machines. Without proper containment, temperature and water leaks can spoil food or cause damaging water spills. Quality seals go beyond leak prevention by improving overall energy efficiency and reducing noise by dampening vibrations. This improved performance goes a long way in keeping customers happy with your products. Material Science for Modern Appliances At Elbex, we understand how appliances experience heavy use and harsh operating conditions that can damage low-quality seals. Because of this, we manufacture high temperature rubber seals for appliances like ovens and dryers to prevent degradation. We use silicone rubber extrusions for appliance applications because they offer the perfect combination of flexibility, food-safe properties, and durability across extreme temperature swings. With the right materials, you can have confidence that appliance seals will stand the test of time. Elbex’s Collaborative Design Process At Elbex, we believe in working as your engineering partners. Instead of just taking orders, we collaborate with your team to select the right materials and profiles based on your appliance design. This enables us to create appliance door seals and gaskets that will always achieve a perfect fit, even for appliances with unique specifications. After all, reliable appliances start with reliable seals. With high-quality silicone seals from Elbex, you can deliver the level of quality your customers deserve. Contact us today to request a quote or discuss your appliance sealing project.