Interlock Type-A Conduit
Semi-Interlock (SA)
Optimal protection for optical fiber. Resists lateral pressure, twisting, and pulling. With excellent pliability, this conduit will withstand repeated bending, so that the interconnects will not come apart in normal use. Interlocks are connected more firmly than the Square-Lock tubing (see figure in Technical Specs).
Features and Attributes:
- Connected more firmly than the Square-Lock type conduit (Refer to figure 1 in Technical Specs)
- Resists lateral pressure, twisting and pulling (For general use, the interconnects do not come apart)
- Excellent pliability
- Withstands repeated bending
- Optimum protection for optical fiber
- Does not stretch
- RoHS Compliant
Standard Product:
- Flexible Tube Material: Stainless Steel SUS304
- Sheathing Material: Glossy Soft Polyvinyl-Chloride (PVC)
- Sheathing Variety: Tight-Fitting
- All customizations outside of the standard listed above, will be custom and made to order. Please view Customizations for a full listing of available options.
Services Available Upon Request:
- Spooling: We can deliver flexible tubes on plastic reels for easy handling and maintenance.
- Double Washing: Double washing treatment (using detergent) can be applied to tubes for high precision applications.
- Chemical Polishing: We offer tubes with chemical polishing, which provides extra shine for optical applications. (*Special polishing for semiconductor-quality applications also available.)
Common Applications:
- Optical fiber protection
- Electrical wire protection
- Shower hose covering
- Cable harness protection, such as on arcade game machines
Stock Level: Dependent upon the size, these conduits may be in stock or made to order. General lead time for non-stock sizes is 4-6 weeks.
Figure 1
| Standard type | PVC coating type | ||||||||||||
| Model (Part Number) | ID ±0.2mm (inch) |
OD ±0.2mm (inch) |
Bending radius ±10(mm) |
Standard Length (m) |
Approx Weight (g/m) |
Max length one stretch (m) |
Stock | Model (Part Number) | OD ±0.3mm (inch) |
Standard Length (m) |
Approx Weight (g/m) |
Stock | |
| SA-2.6N | 2.6(0.102) | 3.9(0.153) | 28 | 100 | 35 | 100 | ○ | SAP-2.6N | 4.9(0.193) | 100 | Contact Us | Contact Us | |
| SA-3N | 3.0(0.118) | 4.6(0.181) | 30 | 100 | 50 | 100 | ○ | SAP-3N | 6.0(0.236) | 100 | Contact Us | Contact Us | |
| SA-4N | 4.0(0.157) | 6.0(0.236) | 37 | 100 | 56 | 100 | ○ | SAP-4N | 7.5(0.295) | 100 | Contact Us | Contact Us | |
| SA-5N | 5.0(0.197) | 7.1(0.280) | 23 | 100 | 68 | 100 | ○ | SAP-5N | 8.5(0.335) | 100 | Contact Us | Contact Us | |
| SA-6N | 6.0(0.236) | 8.0(0.315) | 23 | 100 | 80 | 100 | ○ | SAP-6N | 9.6(0.378) | 100 | Contact Us | Contact Us | |
| SA-7N | 7.0(0.276) | 9.0(0.354) | 25 | 100 | 98 | 100 | ○ | SAP-7N | 11.0(0.433) | 100 | Contact Us | Contact Us | |
| SA-8N | 8.0(0.315) | 10.0(0.394) | 25 | 100 | 100 | 100 | ○ | SAP-8N | 12.0(0.472) | 100 | Contact Us | Contact Us | |
| SA-9N | 9.5(0.374) | 12.2(0.480) | 30 | 100 | 145 | 100 | ○ | SAP-9N | 14.0(0.551) | 50 | Contact Us | Contact Us | |
| SA-13N | 12.5±0.3 (0.492) | 15.2±0.3 (0.598) | 40 | 50 | 180 | 50 | ▲ | SAP-13N | 17.2(0.677) | 50 | Contact Us | Contact Us | |
| SA-15N | 15.8±0.3 (0.622) | 18.5±0.3 (0.728) | 50 | 50 | 208 | 50 | ▲ | SAP-15N | 21.0±0.4 (0.827) | 50 | Contact Us | Contact Us | |
| SA-19N | 19.1±0.3 (0.752) | 21.8±0.3 (0.858) | 60 | 50 | 245 | 30 | ▲ | SAP-19N | 25.0±0.4 (0.984) | 30 | Contact Us | Contact Us | |
| SA-25N | 25.4±0.3 (1.000) | 28.1±0.4 (1.106) | 70 | 50 | 287 | 30 | ▲ | SAP-25N | 32.0±0.5 (1.260) | 30 | Contact Us | Contact Us | |
Attached are the general available options for customization. Please be advised that there may be restrictions based upon size, and application for usage. Please Contact Us for support on your customization requirements!
Available Flexible Metal Tube Materials:
| Material | Grade |
Application |
Features | Applicable Tube Type |
| Stainless Steel | – SUS304 (Standard) – SUS303 – SUS316 – SUS430 |
– General Industrial – Medicinal |
– Rigid – Does not Rust |
– Most tube type |
| Aluminum | – General Industrial – Medicinal |
– Does not Rust – Anti-Static – Lightweight but Less Sturdy – Excellent Thermal Conduction |
– Square Lock A – Interlock Type B – Screw Tube |
|
| Titanium | – General Industrial – Medicinal – Space Engineering |
– Rigid – Anti-Static – Lighter than Stainless Steel |
– Square Lock A | |
| Bronze Phosphate | – C5341 | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type |
| Copper | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type | |
| Brass | – Noise Counter-Measure | – Electromagnetic Compatibility (EMC) | – Most tube type | |
| Steel | – Galvanized Steel Strip – SK Material (Hardest Steel) |
– General Industrial | – Affordable Price – Heavy – Rusty – Generally Needs to be Sheathed |
– Most tube type |
Sheathing Materials and Information
Adding a resin/rubber coating to a flexible tube provides the following additional benefits:
– Waterproof/resistant
– Oil-proof/resistant
– Attractive appearance
– Additional strength
– Superior insulation
**The following chart displays the most common materials available. Please consult us regarding specifications, minimum lot, delivery date, sheathing combinations, and additional materials available (including any heat or chemical resistance requirements).
| Material Type (Code) | Characteristic | Color | Resin Feature | Surface Appearance |
| PVC/Polyvinyl Chloride (P) | Soft | Black (Standard), Gray, White, Ivory, Red, Pink, Orange, Yellow, Yellow-Green, Green, Blue, Clear | – Pliable – Chemical Resistant – Heat Resistant up to 60°C – High Oil Resistance |
– Glossy – Matte – Clear |
| Semi rigid | Black | – Slightly Hard – Smooth Surface – Chemical Resistant – Heat Resistant up to 60°C – Oil Resistant |
– Glossy | |
| Flame Resistant | Black, Gray, White, Red, Pink, Orange, Yellow, Green, Blue | – Pliable – Chemical Resistant – Heat Resistant up to 60°C – High Oil Resistance |
– Glossy | |
| Flame Resistant, UL Standard | Black | – Pliable – Chemical Resistant – Heat Resistant up to 105°C – High Oil Resistance |
– Matte | |
| Polyethylene (PE) | Low density (LDPE) | Black | – Harder than the Soft Hard Type – Smooth Surface – Chemical Resistant – Heat Resistant up to 70°C – High Oil Resistance |
– Glossy |
| Polyester Elastomer (TEEE) |
We can provide soft(ShoreA90) to Semi rigid(ShoreD72) | Black Opaque | – Pliable – Weatherproof – Heat Resistance up to 120°C |
– Glossy |
| Silicone Rubber (Si) | Soft | Black, Gray | – Pliable – Heat Resistance up to 180°C |
– Matte |
| Fluorocarbon Resin (FEP) (ETFE) (PFA) |
Flame Resistant | Black | – Less Pliable – Excellent Chemical and Oil Resistance – Slippery Non-Stick Surface – Heat Resistant up to 220°C |
– Glossy |
| Polyurethane (PU) | Ester Grade | Black | – Pliable – Abrasion Resistant – Heat Resistant up to 70°C |
– Glossy |
| Ether Grade | Black, Ivory | – Pliable – Abrasion Resistant – Water Soluble – Heat Resistant up to 70°C |
– Glossy | |
| Olefin Elastomer (O) | Soft | Black | – Pliable – Weatherproof – Heat Resistant up to 60°C |
– Matte |
PVC Sheathing Varieties
| Figure Num. | Sheathing Variety | Part Number Code | Features |
| 1 | Tight-Fitting | KSP- __N | – Standard item – PVC fills the spiral valley to make the finished surface even and smooth. |
| 2 | Vacuum Sheathing | KSP-__N-B | – During processing, sheathing is applied in a vacuum. – The finished surface maintains the spiral pattern of the coil. |
| 3 | Bagging Sheathing | KSP-__N-F | – Sheathing is applied only on the surface of the tube and the spiral valley contains no PVC. The surface of the sheathing will be completely smooth. |
| N/A | Heat Shrink Sheathing | KSP-__N + Shrink tube type# | – Please contact us for more details. |
Other Services
Double Washing and Chemical Polishing
Double washing:
Double washing treatment (using detergent) can be applied to tubes for high precision applications.
Chemical polishing:
We offer tubes with chemical polishing, providing extra shine for optical applications.
※ Special polishing for semiconductor-quality applications also available.
Instructions on How to Measure Bend Radius: PDF Here