UV‑Transmitting Lead‑Free Barium Silicate Glass Tubing

This tubing is purpose‑built for manufacturing low‑pressure mercury UVC germicidal lamps. UVC germicidal lamps rely on ultraviolet output to inactivate bacteria, viruses and micro‑organisms for sanitation. The glass is formulated to let critical germicidal UVC light pass through while meeting the mechanical and thermal demands of UVC lamp production.

feature application available size Chemical Properties Physical Properties

Feature

Optimized glass formulation enables effective ultraviolet transmission for general disinfection requirements. It exhibits good sealing compatibility with Dumet wire electrodes to reduce cracking risk during lamp sealing operations. The material supports smooth thermal processing and forming during lamp manufacturing. Reliable performance is maintained under humid working environments. Tight dimensional control guarantees consistent quality for large‑volume lamp production. Color‑clear appearance with well‑managed surface imperfections.

Application

It is used to produce UVC germicidal lamps for household and commercial disinfection cabinets. It forms the lamp envelope base for UVC modules integrated in air purifiers and HVAC duct disinfection systems. It manufactures UVC lamps deployed in drinking water, circulating water and wastewater disinfection equipment. It supports UVC sanitizing lamp fixtures installed in medical facilities, food processing sites and public hygiene locations. It serves as core raw envelope material for general‑purpose low‑pressure mercury UVC germicidal lamps within the lighting industry.

Available Size

Spec.	O.D. (mm)	W.T. (mm)	Length (mm)
T3	10.6‑11.1	0.55‑0.64	1185 1220 1240
T5	15.75	0.60‑0.70	1155
T8	25.0‑26.0	0.65‑0.75	955 1000 1050 1176 1241

OEM is acceptable

Chemical Properties

Item	Specification
Hydrolytic Resistance	Grade Ⅲ
Composition	Lead‑free barium silicate

*For reference only

OEM is acceptable

Physical Properties

Item	Specification
Appearance	Colorless and transparent
UVC Transmittance	75‑80% (@253.7 nm)
Coefficient of Thermal Expansion	93 ± 2 × 10⁻⁷/℃ (30‑380℃ test range)
Density	2.65 ± 0.01 g/cm³
Softening Point	660 ± 15 ℃
Stress	450 ± 10