Neutral Borosilicate Glass Cartridges for Pen Injectors

Neutral Borosilicate Glass Cartridges for Pen Injector Systems

Sizes:

1.5ml, 1.8ml, and 3ml cartridge options
Core Capabilities :

Standard precision glass cartridge bottle for pen injector systems USP Type I neutral borosilicate glass Baked-on siliconization for smoother gliding-force control Thermal laser cutting to help reduce debris risk Laser coding and graduation scale printing for batch visibility Custom ID/OD, printing, siliconization, and packing support
Description:

Neutral Borosilicate Glass Cartridge is designed for pen injector systems, insulin and GLP-1 drug delivery, dental local anesthesia, and other pharmaceutical applications that require stable glass quality, controlled dimensions, and smooth dosing performance.

The Standard Precision Series is available in 1.5ml, 1.8ml, and 3ml formats, using USP Type I neutral borosilicate glass to support pharmaceutical compatibility, precision filling, and reliable downstream assembly.

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Glass Cartridge Advantages

Precision Mouth for Stable Crimping

The cartridge mouth is designed to support stable crimping and sealing performance in pharmaceutical filling and assembly. It is suitable for projects requiring ISO-related dimensional control and consistent closure compatibility.

Smart Inner Wall for Smooth Dosing

Baked-on siliconization helps create a smoother inner wall surface, supporting stable gliding force and more consistent dosing behavior in electronic or spring-loaded pen injector systems.

Thermal Laser-Cut Body

Thermal laser cutting helps reduce the risk of glass micro-particles compared with conventional mechanical cutting methods. This supports cleaner cartridge performance for sensitive injectable formulations.

Traceability and Graduation Printing

High-precision laser coding, HD silk-screen printing, hot stamping, and graduation scale printing can be applied for batch visibility, product identification, and user-side dosage reading.

Custom Specification Support

LINUO supports custom ID/OD dimensions, siliconization, coating, printing, RTU/custom packing, and OEM/ODM cooperation for pharmaceutical and dental cartridge projects.

Glass Cartridge Technical Specifications

Outer Diameter											Height
d₁		d₂		d₃ Min	d₄		d₅		d₆		h₁		h₂
Nominal	Tolerance	Nominal	Tolerance	d₃ Min	Nominal	Tolerance	Nominal	Tolerance	Nominal	Tolerance	Nominal	Tolerance	Nominal	Tolerance
8.65	±0.1	6.85	±0.1	6.55	7.15	±0.2	5.5	±0.35	3.15	±0.2	5.0	±0.2	2.9	±0.1
10.85	±0.1	8.65		8.35
10.95	+0.15	9.25		8.95
11.60	+0.15	9.65		9.35

Glass Cartridge Manufacturing Process

· 01

Automatic Glass Tube Feeding System
· 02

Forming
· 03

Dimensional and Visual Inspection
· 04

Printing and Thermal Curing
· 05

Annealing Process
· 06

100% Inline Inspection of Each Vial
· 07

Manual Visual Inspection
· 08

Automatic Packaging
· 09

Intelligent Digital Warehouse

Solving Core Challenges

Stable Gliding Force Control

Optimized siliconization prevents”stuttering” in electronic or spring pens. Critical for 3ml cartridge sterile (GLP-1/Insulin).
Zero-Debris Technology

Thermal Laser-Cut eliminates glass flakes that cause drug delamination and pH shifts.

Applications & Scenarios

Vaccine Field
Blood Products
Biopharmaceutical Field
High-Value Innovative Drugs
Aesthetic Medicine
High-End Cosmetics

Customization & OEM/ODM Services

Dimensions

Custom c apacity (0.1ml–50ml+), diameter, height, wall thickness
Printing &Coding

Silk-screen, HD printing, laser coding, hot stamping
Siliconization & Coating

Hydrophobic inner surface; UV-blocking or anti-friction outer coating
Packaging & Sterilization

Bulk/RTU nest-and-tub /RFF; ETO sterilization available