{"product_id":"otoplastics-3dresyn-oto-uhf-ultra-hard-and-flexible-resin","title":"Otoplastics 3Dresyn OTO-UHF – Ultra-Hard and Flexible Resin","description":"\u003cp\u003e\u003cstrong\u003eUltra hard and flexible photopolymer for otoplastics and hearing-related components (UHF system)\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eProduct description\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e3Dresyn OTO-UHF\u003c\/strong\u003e is an advanced photopolymer engineered for the fabrication of durable ear shells, tips and otoplastic components requiring a balance between rigidity and flexibility.\u003c\/p\u003e\n\u003cp\u003eThe material combines high hardness with controlled flexibility, enabling improved comfort, resistance to fracture and long-term durability in demanding audiology applications.\u003c\/p\u003e\n\u003cp\u003eThe formulation is based on an Ultra-Hard and Flexible (UHF) architecture, supporting reliable mechanical performance under cyclic loading and thin geometries.\u003c\/p\u003e\n\u003cp\u003eIt is compatible with a wide range of SLA, DLP and LCD systems used in professional audiology and dental laboratories.\u003c\/p\u003e\n\u003ch4\u003eApplication framework\u003c\/h4\u003e\n\u003cp\u003eIntended for professional use in vat photopolymerization (SLA, DLP and LCD) additive manufacturing for audiology and otoplastics workflows.\u003c\/p\u003e\n\u003cp\u003eFinal suitability of printed parts must be validated by the user according to the specific application, processing conditions and applicable regulatory requirements.\u003c\/p\u003e\n\u003ch4\u003eTypical applications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEar shells and hearing aid housings\u003c\/li\u003e\n\u003cli\u003eCustom ear tips and inserts\u003c\/li\u003e\n\u003cli\u003eFlexible-rigid otoplastic components\u003c\/li\u003e\n\u003cli\u003eWearable in-ear devices requiring comfort and durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eMeasured mechanical properties\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTensile strength: \u0026lt; 40 MPa (ISO 527-1 \/ ISO 527-2)\u003c\/li\u003e\n\u003cli\u003eFlexural strength: \u0026lt; 75 MPa (ISO 178)\u003c\/li\u003e\n\u003cli\u003eYoung’s modulus: \u0026lt; 2000 MPa (ISO 527)\u003c\/li\u003e\n\u003cli\u003eElongation at break: \u0026lt; 40 % (ISO 527)\u003c\/li\u003e\n\u003cli\u003eImpact resistance, Notched Izod: \u0026lt; 38 J\/m (ISO 180:2023)\u003c\/li\u003e\n\u003cli\u003eShore hardness: D78 ± 2 (ISO 868)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eMeasured physical properties\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eViscosity: \u0026lt; 2000 mPas at 23°C ± 2°C (ISO 3219)\u003c\/li\u003e\n\u003cli\u003eDensity: 1.0-1.2 g\/cm³ (ISO 1183)\u003c\/li\u003e\n\u003cli\u003eWater absorption: \u0026lt; 0.05 % (24 h at 23°C) (ISO 62)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProcessing-related characteristics\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShrinkage: very low (typical)\u003c\/li\u003e\n\u003cli\u003eResolution capability: very high (process-dependent)\u003c\/li\u003e\n\u003cli\u003eFlow and recoating behaviour: optimized for reliable printing performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThermal behaviour\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eStable performance under typical operating conditions for otoplastics applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePhysical properties\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShrinkage: very low (typical)\u003c\/li\u003e\n\u003cli\u003eResolution capability: very high (process dependent)\u003c\/li\u003e\n\u003cli\u003eDimensional stability: high\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFunctional performance characteristics\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCombination of rigidity and flexibility for improved comfort\u003c\/li\u003e\n\u003cli\u003eEnhanced resistance to cracking and fracture\u003c\/li\u003e\n\u003cli\u003eSuitable for thin-walled and complex geometries\u003c\/li\u003e\n\u003cli\u003eHigh durability under repeated mechanical stress\u003c\/li\u003e\n\u003cli\u003eStable performance in wearable applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePrinting \u0026amp; processing guidelines\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePrinting technologies: SLA, DLP and LCD\u003c\/li\u003e\n\u003cli\u003eWavelength range: 385–405 nm\u003c\/li\u003e\n\u003cli\u003eCompatible with most commercial and professional systems when properly calibrated\u003c\/li\u003e\n\u003cli\u003eLow viscosity enabling stable recoating and processing\u003c\/li\u003e\n\u003cli\u003eVery high resolution capability for fine details\u003c\/li\u003e\n\u003cli\u003eFollow 3Dresyns IFU for exposure, washing and post-curing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWorkflow recommendations\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOptimize exposure parameters to balance flexibility and rigidity\u003c\/li\u003e\n\u003cli\u003eValidate workflow depending on geometry and thickness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eBiocompatibility \u0026amp; quality framework\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBiocompatibility-related testing may be performed under controlled laboratory conditions\u003c\/li\u003e\n\u003cli\u003eEvaluation frameworks may include ISO 10993 methodologies\u003c\/li\u003e\n\u003cli\u003eManufacturing aligned with ISO 13485 quality management systems\u003c\/li\u003e\n\u003cli\u003eOrgano-tin free formulation\u003c\/li\u003e\n\u003cli\u003eFinal biological performance depends on validated processing workflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTesting \u0026amp; processing disclaimer\u003c\/h4\u003e\n\u003cp\u003eMaterial properties are measured on printed and post-processed specimens and may vary depending on printer type, printing parameters, build orientation, post-curing conditions and workflow validation. Reported values are indicative and provided for reference only.\u003c\/p\u003e\n\u003ch4\u003eRegulatory \u0026amp; legal notice\u003c\/h4\u003e\n\u003cp\u003eThis material is supplied as a professional manufacturing material for audiology and otoplastics workflows and is not marketed as a finished medical device. The regulatory classification, conformity assessment and validation of any final device manufactured using this material remain the sole responsibility of the legal manufacturer in accordance with applicable regulations.\u003c\/p\u003e\n\u003ch4\u003eWhy choose 3Dresyn® OTO-UHF\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBalanced ultra-hard and flexible behavior\u003c\/li\u003e\n\u003cli\u003eImproved comfort and durability in wearable devices\u003c\/li\u003e\n\u003cli\u003eHigh dimensional stability and low shrinkage\u003c\/li\u003e\n\u003cli\u003eVery high resolution capability\u003c\/li\u003e\n\u003cli\u003eCompatible with SLA\/DLP\/LCD systems\u003c\/li\u003e\n\u003cli\u003eOrgano-tin free formulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"border: 1px solid rgba(0,0,0,.14); padding: 16px; border-radius: 18px; background: #fafafa; margin-top: 24px; margin-bottom: 12px;\"\u003e\n\u003cstrong\u003ePart of the 3Dresyns® Technical Documentation System\u003c\/strong\u003e\n\u003cp style=\"margin: .5rem 0 0 0;\"\u003eThis technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.\u003c\/p\u003e\n\u003cp style=\"margin: .6rem 0 0 0;\"\u003e\u003ca href=\"https:\/\/www.3dresyns.com\/pages\/resources\"\u003e Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting) \u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 0.9em; opacity: 0.8;\"\u003eDocument reference: TDS-OTO-UHF-EN | Version: 1.0 | Last updated: March 2026\u003c\/p\u003e","brand":"3Dresyns","offers":[{"title":"1000 grams","offer_id":43531283300526,"sku":"P11661","price":150.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/5616\/files\/IMG_1364_480x480_39f32696-f07c-42d2-860b-c7749208d462.webp?v=1701340570","url":"https:\/\/www.3dresyns.com\/products\/otoplastics-3dresyn-oto-uhf-ultra-hard-and-flexible-resin","provider":"3Dresyns","version":"1.0","type":"link"}