PEEKsil tubing

Fused silica lined PEEK

PEEKsil^® is constructed from a core of smooth precision bore fused silica tubing bonded to a PEEK outer sheath. It is manufactured to exacting tolerances of bore size and concentricity, for reproducible flow rates and reliable connections.

The separation achieved is easily lost in tubing and connectors as a result of dispersion. PEEKsil reduces dispersion and therefore loss of efficiency, sensitivity and resolution.

Features and benefits

Inert smooth flow path, to minimize band broadening.
Precise inside bore diameter.
Flexible and robust.
Lower sample carryover.
Color coded for easy identification of internal diameter.
Perfectly square cut and polished ends.
Capable of withstanding high pressures.
Effective pH range of 0-10 (not compatible with hydrofluoric acid).
Compatible with most organic solvents (unlike PEEK).

Recommended applications

UHPLC, HPLC and LCMS.

Product specifications

PEEKsil specifications for use with PEEKLok™ connections.

To optimize your PEEKsil connections utilize our PEEKLok fittings, available in 1/16" to suit 10-32 UNF ports, and 1/32" to suit 6-32 UNF and 6-40 UNC ports.

ID: 5 µm to 530 µm
OD: 360 μm (0.36 mm), 1/32", and 1/16"
Tubing lengths: 50 mm, 100 mm, 150 mm, 250 mm, 500 mm. Custom lengths are also available on request.
Maximum temperature: 100ºC

PEEKsil ID tolerances and colors

ID	Tolerance	Color code
25 µm	±1 µm	Orange
50 µm	±3 µm	Beige (natural)
75 µm	±3 µm	Black
100 µm	±3 µm	Red
150 µm	±5 µm	Purple
175 µm	±5 µm	Yellow
200 µm	±5 µm	Blue
300 µm	±5 µm	Gray
530 µm	±10 µm	Bone white

Recommended PEEKsil maximum operating pressure*

1/16" OD PEEKsil ID	Pressure*
25 μm (0.001")	1,035 bar (15,000 psi)
50 μm (0.002")	1,035 bar (15,000 psi)
75 μm (0.003")	1,035 bar (15,000 psi)
100 μm (0.004")	1,035 bar (15,000 psi)
150 μm (0.006")	1,035 bar (15,000 psi)
175 μm (0.007")	1,035 bar (15,000 psi)
200 μm (0.008")	1,035 bar (15,000 psi)
300 μm (0.012")	860 bar (12,500 psi)
530 μm (0.021")	550 bar (8,000 psi)

1/32" OD PEEKsil ID	Pressure*
25 μm (0.001")	1,380 bar (20,000 psi)
50 μm (0.002")	1,380 bar (20,000 psi)
75 μm (0.003")	1,380 bar (20,000 psi)
100 μm (0.004")	1,310 bar (19,000 psi)
150 μm (0.006")	1,310 bar (19,000 psi)