Diemat, Inc. | Low-Temperature Sealing Glass Selection Guide

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LOW-TEMPERATURE SEALING GLASS SELECTION GUIDE - PASTES

	LOW TEMPERATURE
	Lead-free	Lead
	DM2995P/J204	DM2700P/J105
TYPICAL PROPERTIES
Sealing Temperature, °C	500	350
Glass Transition Temperature (Tg), °C	360	215
Average Coefficient of Thermal Expansion (25 to 150°C), ppm/°C	6.4	7.5
Density of Glass, g/cc	5.4	7.6
Helium leak rate, ATM-cc/sec	10^-9	10^-8

FEATURES
Pb-free glass
Fine particle size
No fiber or lens metallization required
Replaces solder sealing
Air processing, no flux
Fatigue, corrosion, and creep resistant
High adhesion to most surfaces, including gold
No outgassing during seal or product life
Moisture resistant: dry-box storage not required

TYPICAL APPLICATIONS
Telecom - optical fiber sealing in ferrules
Ribbon fiber
Fiber couplers/splitters
V-groove assemblies
Lenses
Lids and windows
Via hole sealing
Sensor sealing

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