Underwriters Laboratories, now called UL, is an independent safety science company that tests, validates, inspects, certifies, audits, advises, and trains customers on compliance and regulatory issues. They are a global company that collaborates to establish standards for safe products and safe living and working conditions.
UL-94 is the Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances. Within this standard, materials are subjected to various burning tests to see their performance in flammable conditions. Flammability UL 94 V method “evaluates both the burning and afterglow times after repeated flame application and dripping of the burning test specimen” in a vertical burning test.
To attain the UL 94V-0 standard, samples must have met the following criteria:
- Burning combustion is not sustained for more than 10 seconds after applying controlled flame.
- Total flaming combustion time for 5 samples does not exceed 50 seconds.
- None of the samples burned up to the mounting clamp by either flaming or glowing combustion.
- None of the samples dripped flaming particles that result in the ignition of the surgical cotton below them.
- Samples did not exhibit glowing combustion for more than 30 seconds after removing the second controlled flame.
Flame Retardant vs. Flame Resistant
Our extensive product line includes a selection of UL 94V-0 rated flame retardant and flame resistant rubber extrusions and strips in a variety of sizes and designs.
Although these two categories seem to be the same, each is specifically designed to withstand a certain level of heat and flame exposure. To ensure you select the right material for your application, it is particularly important to understand the differences between flame retardant and flame resistant EPDM rubber products.
Flame Resistant
Flame resistant materials offer fire protection for short periods and can prevent flames from spreading during an active fire. They are not ideal for extended exposure to heat, as they will break down over time.
Flame Retardant
Flame retardant materials are added to or combined with materials that would otherwise be combustible. They are more capable of withstanding direct contact with fire than flame resistant materials, and will retain their shape and composition when exposed to high levels of heat.
bout Us:
Hebei Shida Seal Group is a leading manufacturer of Flame Retardant EPDM Extrusions and Strips, rubber strips, rubber seals, extrusions, rubber gaskets, extruded rubber parts and molded rubber parts from Qinghe, Hebei, China. We always manufacture our Flame Retardant EPDM Extrusions and Strips from the highest quality compounds available. This ensures that our rubber Flame Retardant EPDM Extrusions and Strips are not only suitable for use, but also made to last. Despite offering high strength and tear resistance, our window seals are also highly flexible. This enables our profiles to fit around a wide variety of curves.
Our facility is fully equipped with the latest equipment and technology, providing us with the capability to manufacture precision extruded rubber Bubble Top Gaskets in quantities from short run to full production runs. We have 5 extrusion lines, continuous cure microwave, precision cutting, and splicing machines, and also provide value-added finishing services. In addition, we offer in-house tool, and mold design and manufacturing to ensure that your parts are manufactured to the most exacting requirements.
Hebei Shida Seal Group is uniquely qualified to manufacture custom Flame Retardant EPDM Extrusions and Strips for your application. Our quality management system is IATF 16949:2016 accredited. We can provide PPAP Level 3 documents for OEM clients.
If you want to contact us about any issue please call (+86)319 8032626 or send us an e-mail. If you would like to submit a proposal for consideration simply submit a quote.