MB297, MB306, MB600, MB600G — Cyanoacrylates and Inorganic Silicate Compounds up to +816 °C

Country: · Model: MB297 / MB306 / MB600 / MB600G

The cyanoacrylates MB297 and MB306 cure in seconds from surface moisture, and the silicate compounds MB600 and MB600G work at temperatures up to +816 °C. The former are needed for fast assembly of small parts, the latter for furnaces, thermocouples and heaters.

MB297: high-viscosity ethyl cyanoacrylate 2200–2400 mPa·s; fixture time 20–50 s; shear 7.9 MPa; 70 Shore D; −51…+121 °C; > 10¹⁵ Ω·cm
MB306: methyl cyanoacrylate 75–95 mPa·s; fixture time 10–30 s; −51…+121 °C; for metals
MB600: aqueous sodium silicate; 30–600 mPa·s; 45 min at 93 °C + 60 min at 149–204 °C; −18…+816 °C; density 1.53
MB600G: silicate with graphite, electrically conductive coating; surface resistance 1–10 Ω; 24–48 h at 24 °C or 1–2 h at ≤ 79 °C; up to +371 °C

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Technical specifications

MB297	high-viscosity ethyl cyanoacrylate 2200–2400 mPa·s; fixture time 20–50 s; shear 7.9 MPa; 70 Shore D; −51…+121 °C; > 10¹⁵ Ω·cm
MB306	methyl cyanoacrylate 75–95 mPa·s; fixture time 10–30 s; −51…+121 °C; for metals
MB600	aqueous sodium silicate; 30–600 mPa·s; 45 min at 93 °C + 60 min at 149–204 °C; −18…+816 °C; density 1.53
MB600G	silicate with graphite, electrically conductive coating; surface resistance 1–10 Ω; 24–48 h at 24 °C or 1–2 h at ≤ 79 °C; up to +371 °C

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

MB297, a high-viscosity ethyl cyanoacrylate (2200–2400 mPa·s), sets in 20–50 s, has a shear strength of about 7.9 MPa, 70 Shore D and a resistivity of over 10¹⁵ Ω·cm. MB306, a low-viscosity methyl cyanoacrylate (75–95 mPa·s), sets in 10–30 s and holds especially well on metals. Both work from −51 to +121 °C, and the range includes other grades, in particular MB250NT. MB600 is a one-component system based on an aqueous sodium silicate solution (30–600 mPa·s), which cures for 45 min at 93 °C and then 60 min at 149–204 °C, works from −18 to +816 °C, with a resistivity of over 10¹⁰ Ω·cm. MB600G, a graphite-filled paste, gives electrically conductive coatings with a surface resistance of 1–10 Ω, cures in 24–48 h at room temperature or 1–2 h at a temperature of no more than 79 °C, and withstands +371 °C. There is also a silver-filled MB600S.

How to choose

First decide whether a temperature higher than organic polymers can withstand is needed. For assembling small parts made of metals, plastics and rubber a cyanoacrylate is used, with the low-viscosity MB306 better for metals and MB297 having a higher viscosity. For furnaces, thermocouples, heaters, ceramics and exhaust systems up to +816 °C MB600 is suitable, and where an electrically conductive layer is needed, MB600G up to +371 °C. For repairing metal parts with epoxy, see Steelmaster 43HT.