RT Glass Capillaries

Name: RT Glass Capillaries
Brand: Shenzhen Solar Valley Scitech Development Co., Ltd.

RT Glass Capillaries are essential components in the realm of optical communication, meticulously crafted from borosilicate glass. These capillaries are distinguished by their exceptional inner diameter precision, maintained within a remarkable tolerance of ±0.001mm. This high level of dimensional accuracy ensures precise positioning, which is critical in optical applications.

The physical and chemical properties of RT Glass Capillaries are outstanding, including their high resistance to thermal shock and chemical corrosion, making them durable and reliable for long-term use. One of their notable features is the high ultraviolet (UV) transmission characteristics, which is particularly advantageous for optical fiber applications. This property allows for the rapid curing and bonding of 2, 3, or 4 optical fibers within the capillary using UV-sensitive adhesives, effectively fixing and positioning the fibers in place.

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Specifications of RT Glass Capillaries

RT Glass Capillaries Product Parameter Table
Project	Indicator Requirements
Material Properties	Material: Borosilicate Glass
	Density: 2.3×10³Kg/m³ Thermal Expansion Coefficient: 3.3×10-6cm/cm℃
	Compressive Strength: ＞1.57×108Pa Young's Modulus: 6.76×1010Pa/m2
	Softening Point: 820℃ Annealing Point：560℃ Deformation Point：520℃
	Refractive Index: 1.47
	Dielectric Constant: 4.9 (@1MHz)
Dimensional Accuracy	Outer Diameter: Φ0.75mm, Φ1.00mm, Φ1.80mm, Φ2.00mm, Φ2.50mm Outer Diameter Tolerance: OD±0.005mm, customized according to customer requirements
	Inner Hole Size: Long W 0.102, 0.162, 0.253, 0.379, 0.504 ±0.002mm High H 0.051, 0.081, 0.128 ±0.002mm The inner hole size can be customized according to customer requirements.
	length: 5mm, 7mm, 15mm, 20mm Length Tolerance: L±0.2mm, or customized according to customer requirements
	Taper Hole Diameter: Φ0.5±0.15mm, Φ1±0.25mm, or customized according to customer requirements
	Taper Hole Depth: 0.5～1.5mm, 1～2.5mm, or customized according to customer requirements
	Center Hole Position: 0.008mm
Surface Requirements	The cylindrical surface of the product is transparent and has no cracks. The appearance and surface condition meet customer requirements.
	Can be customized according to customer requirements.

Dimension Drawing of RT Glass Capillaries

Features of RT Glass Capillaries

Material: Borosilicate Glass, silica (SiO2) content 80%, softening point >800°C, high strength, high hardness, high light transmittance.
The glass capillary tube is melted and drawn at high temperature. The surface is transparent, which eliminates local 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 transparent and has high UV transmission characteristics. The capillary tube and 2/3/4 optical fibers can be quickly cured and bonded with UV adhesive to fix and position the optical fibers.
Environmental performance: The production process does not use any chemical solvents, and the materials and production process do not contain or involve substances controlled by the European Union.
Glass capillary tubes with various inner hole shapes and structures are accurately made through CNC drawing towers. The optical fiber dimensional tolerance and positioning accuracy are high, and the center distance between 2/3/4 optical fibers can be precisely controlled.