Custom Medical Grade Pebax Heat Shrink Tubing 2:1 / 4:1 Ratio
Aokeray is a specialized manufacturer of medical-grade Pebax heat shrink tubing, engineered specifically for critical microvascular catheter construction and permanent outer jacket encapsulation. Available in standard 2:1 og 4:1 shrink ratios, our Pebax heat shrink tubes cover the full durometer spectrum from ultra-flexible 35D to high-torque 72D. Offering lower recovery temperatures 165C TO 190C than FEP, they provide a smooth, conformal protective layer over delicate braids and profiles with ultra-thin recovered walls down to 0.025mm Manufactured in ISO Class 7 cleanrooms to meet USP Class VI biocompatibility
In addition to our powerful PeBax heat shrink tubing production line, we also offer non heat shrink regular medical PeBax precision catheters.
Pebax Heat Shrink Tubing Durometer & Process Guide
| Shore Hardness | Shrink Ratios | Recovery Temp Range | Primary Medical Application |
| Pebax 35D / 40D / 45D | 2:1 , 4:1 | 165C -175C | Distal atraumatic tips, flexible joints for neuro-microcatheters, balloon protection. |
| Pebax 55D / 63D | 2:1 , 4:1 | 175C-185C | Middle shaft transitions, flexible tracking sleeves, strain relief boots for catheter hubs. |
| Pebax 70D / 72D | 2:1 , 4:1 | 185C-195C | Proximal catheter shafts, structural outer jacket reinforcement, high-torque vascular sheaths. |
Our Custom Pebax Heat Shrink Capability Specifications
| Custom Dimensions & Parameters (定制维度) | Technical Specifications & Capabilities (制造范围) |
| Expanded ID (供货内径范围) | 0.25mm-6.50mm (Custom micro-bore expanded profiles) |
| Recovered Wall Thickness (Rec. WT) | Ultra-thin options from 0.025mm – 0.1mm(0.001″ – 0.004″) |
| Longitudinal Shrinkage Control | Strictly controlled within+- 8% to prevent axial deformation |
| Radiopaque Fillers | Available with 20% eller 30% for X-ray contrast |
| Color & Aesthetics | Optical Translucent, Natural Clear, Jet Black, or custom Pantone colors |
| Packaging Options | Precision cut-to-length pieces (e.g 1.2 m ) or continuous spools |
What is the main advantage of Pebax heat shrink tubing over FEP heat shrink tubing?
FEP heat shrink is a temporary process aid that must be slit and peeled off after the reflow process. In contrast, Pebax heat shrink tubing becomes a permanent outer layer (jacket) of the medical device. Furthermore, Pebax shrinks at a much lower temperature (165C -190C), protecting low-melting-point internal polymers from thermal degradation.
Can you customize the longitudinal shrinkage of Pebax heat shrink tubes?
Ja. Excessive longitudinal contraction can cause braid deformation or uneven wall thickness during reflow. Through our optimized longitudinal orientation extrusion process, we can tightly restrict axial shrinkage to within +-8% (and in some cases +-5%
What radiopaque fillers do you add to Pebax, and what are the standard concentrations?
We standardly compound custom Pebax with Barium Sulfate BiSO4 eller Bismuth TrioxideBi2O3, typically at concentrations of 20% eller 30% by weight. We can also source custom loading percentages based on your specific visual density and wall thickness requirements.
Does Pebax heat shrink tubing retain its custom Shore hardness after full recovery?
Ja. The polymer matrix is engineered to recover its original dimensional configuration without altering its designated durometer stiffness (e.g., a 35D tube remains ultra-flexible, and a 72D tube retains its high torque properties post-shrinkage).
Is your Pebax heat shrink tubing compatible with medical sterilization and bonding?
Our medical-grade Pebax resins are USP Class VI compliant and fully compatible with Stil op (Ethylene Oxide) and Gamma radiation sterilization. Its surface also bonds exceptionally well with medical adhesives or via thermal welding to other polyamides.
Aokeray making medical PEBAX Heat Shrink tubing video
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Information needed for a Pebax heat-shrink review
Provide the Pebax grade, expanded ID, target recovered ID, vægtykkelse, cut length, shrink ratio if specified, assembly loading profile, underlying materials, heat source, process-temperature limits, inspektionsmetode, prototype mængde, annual demand and required documents.
Expanded and recovered dimensions must be reviewed together. Recovery depends on the Pebax grade, dimensioner, heat source, dwell time, airflow, fixtures and assembly geometry. The customer should validate the heat cycle on the actual component and confirm the final dimensions, appearance and functional result.
For extruded single-lumen shaft tubing, review medical Pebax tubing. For multiple flow or functional channels, review Pebax multi-lumen slange. Send a Pebax heat-shrink application for review.