Sealing Glass

Specifications We have developed series of sealing glass with different melting points.

We have developed series of sealing glass with different melting points. They can be used between 440°Cto 980°Cfor glass-to-melt sealing, glass-to-ceramic sealing, silicon materials sealing and glass-to-glass sealing. Glass-sealed plug is one of the products made up of metallic shell and metallic pins bonded by a kind of special sealing glass melted at a high temperature. It has excellent performances of high temperature tolerance, high-pressure tolerance, high electronic resistance and good sealing property. It is applied to the satellite rocket separation, the unlock system of the solar panels when satellite launching and the ignition system of missile or spaceship.

Main Properties and Performance
Type	Sealing Temperature(°C)	Expansion Coefficient(×10-7/°C)	Transition Temperature, Tg(°C)η=1013poise	Deformation Temperature, Tf(°C)η=1011poise
SB-13	440±5	105±3	335	360
SB117	450±5	95±3	360	390
SB56	480±5	94±3	330	360
SB12	470±5	97±3	375	380
SB49	550±5	98±3	355	385
SB301	840±5	98±3	525	542
SB-4-10	840±5	98±3	475	540
SB331	980±5	80±3	585	686