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Nirei manufactures protective tubing for optical fibers using polyester elastomers (Hytrel®). Manufacturing of tubing dimensions at optional sizes is also possible. Grades include general types and flame retardant types. In addition, it is also possible to add color for identification purposes, and Nirei offers a lineup of various colors for color batches.
Since it is possible to use other materials apart from those mentioned above for manufacture, please contact Nirei for more information. (For example, materials that slide easily to enable wire threading work, and fire retardant or non-halogen materials, etc.)
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| No. |
Product Name |
Material Quality |
Dimension |
| 1 |
VICTREX® PEEK® Tube |
VICTREX® PEEK® |
Φ0.5xΦ0.9 |
| 2 |
VICTREX® PEEK® + Hytrel® Tube |
VICTREX®PEEK® + Hytrel® |
Φ0.3xΦ0.5xΦ0.9 |
| 3 |
Hytrel®Tube (General Type) |
Hytrel®7277 |
Φ0.5xΦ0.9 |
| 4 |
Hytrel®Tube (Flame Retardant Type) |
Hytrel®7237F |
Φ0.5xΦ0.9 |
| 5 |
PVDF Tube |
Kynar 2800 |
Φ0.5xΦ0.9 |
| 6 |
Hytrel® 8-core square Tube |
Hytrel®7237F |
0.8mmx2.4mm (Internal dimension) |
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* Products No. 2, 3, 4 and 6 can have colors applied. (Colored products are priced 10% higher.)
* For dimensions or amounts other than those given above, please contact Nirei for more information.
* Product No. 2 is a double-layer structure.
♦ Annealing Conditions : 90ºCx1H
| No. |
Measurement Sample |
L Dimension before Annealing |
L Dimension after Annealing |
Shrinkage Rate |
| 1 |
VICTREX®PEEK®: Φ0.5 xΦ0.9 |
1,000 |
1,000 |
0.00% |
| 2 |
Hytrel®7237F: Φ0.5 x Φ0.9 |
1,000 |
1,000 |
0.00% |
| 3 |
Hytrel®5577: Φ0.5 x Φ0.9 |
1,000 |
995 |
0.55% |
| 4 |
PFA: Φ0.5 x Φ0.9 |
1,000 |
998 |
0.20% |
| 5 |
PVDF: Φ0.5 x Φ0.9 |
1,000 |
1,000 |
0.00% |
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Nirei is molding various types of fluorine tubes with outstanding dimensional accuracy using thermal extrusion molding.
Nirei has experience in molding the following materials: PFA, FEP, ETFE, PVdV, THV.
By selecting the materials and grades, it is possible to support customers' requirements for chemical resistance, heat resistance, transparency, and flexibility.
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