At United Silicone, each Silicone Seal Bar Assembly is custom molded and made to order. In addition to a market-leading size range, we have a variety of different options to best tailor Silicone Bar Assemblies to your unique application.
Learn more about our assemblies, benefits and options.
Seals are applied to horizontal and vertical flexible packages with Seal Bar Assemblies. Thermally conductive Silicone Seal Bars (also referred to as “jaws”) work in partnership with a metal surface to form high-quality seals.
The silicone may appear at the top or the bottom of the assembly depending on part and machine geometries.
Thermally conductive, heat tolerant Silicone Seal Bar Assemblies provide superior heat sealing performance.
| Eliminate Leakers | Crowned designs eliminate air holes/leakers
Ideal for long seal bars |
| Eliminate Teflon Tape | Easy release of films, may eliminate need for Teflon Tape
High heat tolerance (550°F) means silicone won’t become sticky or gummy.
Where small particle contamination is possible, our Teflon Bonded Silicone provides an adhesive-free alternative with up to 7x longer life |
| Heat Tolerant , Formulations | Silicone heat tolerant up to 550°F
High-quality seals |
| Superior Precision & Durability | Compared to extruded silicone, our compression-molded silicone has:
-4x superior thickness tolerances -7x longer lifespan |
| Market Leading Size Range | Industry leading size range of 1 to 110 inches in both smooth and textured surfaces |
| Market Leading Bond Strength | Proprietary process chemically bonds silicone-to-metal and Teflon-coated silicone-to-metal without the need of messy adhesives |
| Ready to Use | Custom molded, eliminates machining of sheet materials |
| Compliant | Conforms to part thickness even on zippers and multi-layer films |