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MTO mastic is an intumescent sealant: when heated it expands many times in volume and forms a dense non-combustible char that does not let fire, gas, smoke or water through. It is used to seal cable penetrations (EIT 120), expansion and construction joints, and penetrations of steel pipes, trays and air ducts (EI 180). It is applied with a sealant gun, spatula or brush at temperatures from +5 to +80 °C, and a film forms within 20–25 minutes. The finished coating operates from −40 to +120 °C at humidity up to 100 % for at least 10 years.

Specifications

ManufacturerOGNEBARIER — OOO “Soyuzpromtekh”, St Petersburg
Fire protection performancecable penetrations EIT 120; expansion and construction joints EI 180; penetrations of steel pipes, trays, air ducts EI 180
Applicationcable lines, penetrations and joints, air ducts
Service conditionsindustrial and residential construction; service of the finished coating from −40 to +120 °C at relative humidity up to 100 %; service life at least 10 years
Baseintumescent fire-protective sealant (mastic); when heated it expands many times, forming a dense non-combustible char; does not let fire, gas, smoke or water through
Packagingcartridge; 3 kg bucket; 20 kg bucket
Application methodsealant gun, spatula, brush (smoothing with a spatula/brush moistened with water)
Application temperaturefrom +5 to +80 °C, relative humidity 75±5 %
Dryingfilm formation time 20–25 min
Shelf life12 months in factory packaging; storage and transport from +5 to +40 °C; after freezing — conditioning for 24 h at +5…+35 °C
StandardsTU 20.30.22-002-33162798-2019; TR EAEU 043/2017; GOST R 53310-2009; GOST 30247.0-94, GOST 30247.1-94; EAEU certificates RU C-RU.PB68.V.00185/20 (cable penetrations), RU C-RU.AD67.V.00366/26 (“OGNEBARIER KPU” penetration seal, 20.05.2026–19.05.2031), NSOPB.RU.EO.PR007.N.00559 (until 24.05.2027), NSOPB.RU.EO.PR007.N.00568; SGR RU.08.08.09.008.E.000314.03.23

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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