Double Spring Square Locked Tube (DSSL)

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Bend-limiting tubes such as the Double Spring Square Locked tube (type DSSL) are specifically made for protecting large core optical fibers or fiber bundles.

The larger bending radius is achieved by inserting two stainless steel wires into the spiral valley of the conduit, which limits the bending characteristics of the tube. It also provides higher durability and robustness to the tube.

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Bend-limiting tubes such as the Double Spring Square Locked tube (type DSSL) are specifically made for protecting large core optical fibers or fiber bundles.

The larger bending radius is achieved by inserting two stainless steel wires into the spiral valley of the conduit, which limits the bending characteristics of the tube. It also provides higher durability and robustness to the tube.

Applications

  • Protection for large bending radius optical fibers, such as quartz type and hollow fibers
  • High Power fiber laser cables

Features

  • Large bending radius
  • Repeated bending
  • Pliable and non-stretch

Tube Material

  • Stainless steel (standard)
  • Titanium

Sheathing Material

  • Soft Polyvinyl-Chloride (PVC)
  • Polyurethane (PUR)
  • Olefin Elastomer

Standard delivery length

The small size tubes are delivered in standard length of ~ 20m. Check in the table below for a detailed information by tube diameter.

Special lengths

Special cut lengths and packaging can be offered upon request. Contact us for more information.

Specifications

Notes:

  • ID = Inside Diameter
  • OD = Outside Diameter
  • DSSL-xxx = Double Spring Square Locked Tube WITHOUT sheathing
  • DSSLP-xxx = Double Spring Square Locked Tube WITH PVC sheathing
  • DSSLU-xxx = Double Spring Square Locked Tube WITH PUR sheathing
  • Only some of the product variations are described in the table below

Standard types
With sheathing
Standard Length (m)
Model
ID
mm
(± 0.2)
OD
mm
(± 0.2)
Bend radius mm
(± 10)
Weight (g/m)
Model
OD
mm
(± 0.2)
Weight (g/m)
DSSL-2.6N 2.6 3.8 30 27 DSSLP-2.6N
DSSLU-2.6N
4.8 40 20
DSSL-3.0N 3.0 4.6 30 33 DSSLP-3.0N
DSSLU-3.0N
6.1 49 20
DSSL-3.2N 3.2 4.8 30 35 DSSLP-3.2N
DSSLU-3.2N
6.3 51 20
DSSL-3.5N 3.5 5.0 35 37 DSSLP-3.5N
DSSLU-3.5N
6.5 54 20
DSSL-3.5N-XR75 3.5 5.0 75 37 DSSLP-3.5N-XR75
DSSLU-3.5N-XR75
6.5 54 20
DSSL-4.0N 4.0 6.0 40 40 DSSLP-4.0N
DSSLU-4.0N
7.0 59 20
DSSL-5.0N 5.0 7.0 50 52 DSSLP-5.0N
DSSLU-5.0N
8.5 76 20
DSSL-6.0N 6.0 8.0 70 64 DSSLP-6.0N
DSSLU-6.0N
9.2 94 20
DSSL-7.0N 7.0 9.0 60 68 DSSLP-7.0N
DSSLU-7.0N
10.0 101 20
DSSL-8.0N 8.0 10.0 55 74 DSSLP-8.0N
DSSLU-8.0N
11.4 106 20

Tube specification is subject to change without notice.