--- title: DuraFiber Multifilament Polyester Alternatives description: Available alternatives for DuraFibers Type 800, Type 1W70, Type 785 and other high tenacity, mid shrink, low shrink, and super low shrink polyesters. image: https://www.servicethread.com/hubfs/2019%20Facility%20Photos/TC2%20twister%20close%20up.jpg --- ![image-png](https://www.servicethread.com/hs-fs/hubfs/image-png.png?width=157&name=image-png.png) ## [ISO 9001:2015 Standard Registered](https://www.servicethread.com/hubfs/ISO%209001%20Certificate%20effective%20September%202025.pdf) ## [![Blog Header](https://www.servicethread.com/hs-fs/hubfs/Servicethread/bg_blog_header.png?width=594&name=bg_blog_header.png) We never stop learning, or sharing what we’ve learned!](https://www.servicethread.com/blog) # [DuraFiber Multifilament Polyester Alternatives](https://www.servicethread.com/blog/durafiber-multifilament-polyester-alternatives) - [Tweet](https://twitter.com/share) - By [Service Thread](https://www.servicethread.com/blog/author/service-thread) - 12/04/20 - [Polyester](https://www.servicethread.com/blog/topic/polyester), [Industrial Fiber](https://www.servicethread.com/blog/topic/industrial-fiber) - [0 Comments](https://www.servicethread.com/blog/durafiber-multifilament-polyester-alternatives#comments-listing) In October 2017 DuraFiber Technologies, previously Performance Fibers, once a ![Durafiber Type 800 Polyester](https://www.servicethread.com/hs-fs/hubfs/2019%20Facility%20Photos/TC2%20twister%20close%20up.jpg?width=300&name=TC2%20twister%20close%20up.jpg)leading US supplier of high-tenacity polyester fibers, engineered fabrics, sewing threads and advanced materials, closed its three facilities in the United States DuraFiber produced a number of widely used types of polyester in the United States and the different types are still referenced by companies searching for quality alternatives today.  Many of the available alternatives happen to have more consistent properties with tighter tolerances but this ultimately depends on the type of alternative polyester.  For example, some of the most common DuraFiber polyesters that were previously used for hose reinforcement were DuraFibers Type 800, Type 1W70 which were the two of the most popular high tenacity polyesters they produced in the US and there are a number of other comparable and more consistent options available today.   The tenacity and hot air shrinkage values (HAS %) of the available alternatives mostly fall in the same range as the DuraFiber products, although there may be some minor differences with the elongation at break. In most cases, there are non-domestic alternatives available at a lower cost.  The following chart lists continuous HT polyester material types that can be drop-in replacements for US made DuraFiber yarns.  | **DuraFiber Polyester Types** | **Alternatives** | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | **DuraFiber Type** | **Property** | **Denier Range** | **Tenacity (g/d)** | **Elongation @ Break (%)** | **HAS (%) 177⁰C/1min/0.05g/d** | **Denier** | **E @ B (%)** | | **Type 1W70** | HT | 220 - 3000 | 8.5 - 9.4 | 12.6 - 18.4 | 4.8 - 7.7 | 250 - 6000 | 12.0 - 16.0 | | **Type 1W73 AA** | HT | 1000 - 3000 | 8.9 - 9.4 | 12.6 - 16.4 | 5.3 - 7.7 | 500 - 6000 | 12.0 - 16.0 | | **Type 800** | HT | 1000 - 1300 | 8.4 - 9.4 | 10.30 - 15.70 | 10.3 - 15.60 | 250 - 6000 | 12.0 - 16.0 | | **Type 785** | HT | 420 - 3000 | 8.6 - 9.1 | 11.2 - 16.7 | 9.2 - 16.2 | 250 - 6000 | 12.0 - 16.0 | | **Type 786** | HT / MS | 890 / 1050 | 8.7 – 9.0 | 18.6 - 22.4 | 4.3 - 6.0 | 750 - 4000 | 12.0 - 22.0 | | **Type 784** | HT / MS | 500 - 1300 | 7.6 – 8.3 | 24.1 - 27.4 | 2.6 - 4.2 | 500 - 3000 | 11.5 - 25.0 | | **Type 787** | HT / LS | 220 - 1500 | 7.6 – 8.3 | 23.6 - 28.7 | 2.0 - 4.2 | 500 - 3000 | 16.0 - 20.0 | | **Type 1Y86** | HT / LS | 220 - 2000 | 7.9 - 8.3 | 21.6 - 24.4 | 1.8 - 3.2 | 500 - 3000 | 11.5 - 25.0 | | **Type 1Y87** | HT / SLS | 220 - 2000 | 7.7 - 8.0 | 23.4 - 26.4 | 0.7 - 2.3 | 500 - 3000 | 11.0 - 28.0 | | **Type 1W72** | HT / SLS | 220 - 3000 | 8.2 - 8.6 | 18.6 - 22.4 | 1.0 - 2.4 | 500 - 3000 | 11.0 - 28.0 | | **Type 1W74 AA** | HT / SLS | 1000 - 3000 | 8.2 - 8.6 | 18.6 - 21.4 | 1.0 - 2.4 | 500 - 3000 | 11.0 - 28.0 | | **Type 799** | HT / SLS | 1010 | 7.7 – 7.9 | 11.2 - 14.0 | 2.2 - 3.4 | 500 - 3000 | 11.0 - 28.0 | | **Type HMLS (DSP)** | HT / HMLS | 1000 - 3000 | 7.7 - 8.0 | 8.6 - 12.4 | 4.0 - 5.0 | 1000 - 3000 | 10.5 - 14.5 |   * HT (High Tenacity Polyester) * MS (Mid Shrink Polyester) * LS (Low Shrink Polyester) * SLS (Super Low Shrink Polyester) * HMLS (High Modulus Low Shrink Polyester)   Service Thread is a global leader in developing and manufacturing engineered yarns and threads. We help customers who are having processing and design challenges, or material availability issues solve these problems by sharing our diverse experience, global supply chain partnerships and advanced material processing techniques. Our technical team is always available to help you choose the best industrial yarn for your application. 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