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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) 5.0(0.197) 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!

Contact Us for Samples!

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