Home » Railroad Fastening Products » Plastic & Rubber & Nylon Products » China Rail Insulator Nylon Sleeves for Railway Track Fastening Systems Factory
China Rail Insulator Nylon Sleeves for Railway Track Fastening Systems Factory
The rail sleeve is also called nylon insert, plastic dowel, nylon dowel, plastic sleeve.
Railway plastic dowel pre-inserted into the concrete sleepers and used together with the screw spikes as the fastening components of rail fastening system to fix the railroad tracks.
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Applications of Nylon rail inserts:
- Cast-in place slab track anchoring
- Concrete tie inserts for turnouts
- Segmental tunnel concrete ring inserts
- Restraining rail brackets
- Direct fixation plates
- Electrical isolation anchor
- Anchor guard-rail
The material of our railway plastic dowel is made using either HDPE or PA66 + GF30% and the product color is available in white, black and dark brown.
Technical Parameter of HDPE Rail Plastic Dowel
| No. | Technique parameter | Unit | Technical requirement | Value |
| 1 | Density | g/ | 0.95-0.98 | 0.95 |
| 2 | Tensile strength | Mpa | ≥19 | 19 |
| 3 | Elongation | % | >80 | 150 |
| 4 | Melting point | °C | 170-190 | 190 |
| 5 | Insulation resistance | Ω | ≥1×1010 | 3.5×1010 |
| 6 | Hardness | A | ≥98 | 98(A) |
Technical Parameter of PA66 Railway Nylon Plastic Sleeve
| No. | Technique parameter | Unit | Technical requirement | Value |
| 1 | Density | g | 1.3-1.45 | 1.45 |
| 2 | Tensile strength | Mpa | ≥170 | 178 |
| 3 | Elongation | % | ≤4.4 | 4.0 |
| 4 | Bending Strength | Mpa | ≥250 | 290 |
| 5 | Impact Strength(No gap) | KJ/m2 | ≥80 | 85 |
| 6 | Melting point | °C | 250°C-270 | 270 |
| 7 | Insulation resistance | Ω | ≥1×108 | 5×108 |
| 8 | Glass fiber content | % | 30-35 | 35 |
| 9 | Hardness | HRR | ≥110 | 118 |
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