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RB Glass Capillaries

RB glass capillary is the basic optical communication device.The material is borosilicate glass.The diameter accuracy is within ±0.001mm.The capillary has high dimensional accuracy,excellent physical and chemical properties, and high ultraviolet transmission characteristics.The capillary and single fiber can be quickly solidified and bonded by ultraviolet adhesive to fix fiber. Since the capillary has a polishing property similar to that of optical fiber, the optical polishing surface required for optical fiber connection can be easily obtained through polishing. It can be widely used in optical devices such as optical connectors, fiber joints and fiber couplers.

rb glass capillaries manufacturer
rb glass capillaries

Specification of RB Glass Capillaries

RB Glass Capillaries Specification Sheet
Material PropertiesMaterial: Borosilicate Glass
Density: 2.3×10³Kg/m³  CTE: 3.3×10-6cm/cm℃
Compressive Strength: >1.57×108Pa Young modulus 6.76×1010Pa/m2
Softening Point: 820℃   Annealing Point: 560℃   Deformation Point: 520℃
Refractive Index: 1.47
Dielectric Constant: 4.9(@1MHz)
Dimensions and Tolerances

OD: Φ0.75mm, Φ1.00mm, Φ1.80mm, Φ2.00mm, Φ2.50mm

Tolerance: OD±0.005mm, or according to customer requirements.

ID: Φ0.053mm, Φ0.081mm, Φ0.127mm, Φ0.250mm

Tolerance: ID±0.001mm, or according to customer requirements.

Length: 5mm, 7mm, 15mm, 20mm                                  
Tolerance: L±0.2mm, or according to customer requirements.
Cone Diameter: Φ0.5±0.15mm, Φ1±0.25mm, or according to customer requirements.
Cone Depth: 0.5~1.5mm, 1~2.5mm, or according to customer requirements.
Coaxiality: 0.008mm
Surface QualityThe cylindrical surface of the product is transparent. The product has no cracks, appearance and surface condition can be made according to customer requirements.
Can be customized according to customer requirements.

Dimension Drawing of RB Glass Capillaries

Dimension Drawing of RB Glass Capillaries

Features of RB Glass Capillaries

Features of RB Glass Capillaries
  • Material: Borosilicate Glass, silica (SiO2) content 80%, softening point > 800℃, with high strength, high hardness and high light transmittance.

  • Properties: The glass capillary is melted and drawn at high temperature. The surface is transparent, which eliminates hidden micro-cracks on the surface. It is not easy to crack and break when dispensing glue to fix the optical fiber, and the dispensing qualification rate is high.

  • The glass capillary tube is a transparent surface with high ultraviolet transmission characteristics. The capillary and a single fiber can be quickly cured and bonded by ultraviolet adhesive to fix and position the fiber.

  • Environmental performance: The production process does not use any chemical solvents, and the material and production process does not contain or involve substances controlled by the European Union.

  • High dimensional accuracy: Glass capillaries of various inner hole shapes and structures are accurately made by CNC wire drawing tower, and optical fiber dimensional tolerance and positioning accuracy are high.

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