For fire prevention


MR-911A is for fire preventing acrylic sealant. It blocks the fire spread and harmful gas due to the small gaps by wiring and piping at the wall, floor and so on and superior in fire resistance, durability, heat resistance and adhesion and has excellent waterproof, moisture proof, soundproof and so on.


Distinct Features of the Product

· Good adhesion to aluminum, wood, concrete, brick and so on
· Complete fire stop performance
· Possible to work without primer
· Excellent sealing effect for long term contraction and expansion

Usage of the Product

· Joint sealing of fire proof area
· Fire proof and dust proof at PC control room and clean room and so on
· Fire proof and water proof at the place sensitive to water such as electricity/electronic and so on
· Opening inside the cable pit
· Pipe and other pipe passing area
· Fire proof, water proof, moisture proof, smoke prevention, dust proof, sound proof and radiation blocking
· Communication relative facility such as PC room/communication/cable terminal

Property of the Product

Classification Contents
Movement allowable limit ±12.5%
Surface hardening time Within 1 hour (23℃ 50% RH)
Complete hardening time 7 ~ 14 days
Hardness (Shore A) 30 ~ 40
Elongation 100 ~ 200% (ASTM D 412)
Classification Contents
Tensile strength 0.8 ~ 1.2 N/㎟ (ASTM D 412)
Specific gravity 1.5 ± 0.1
Hardening type Moisture dry hardening
Packing unit 300ml (CTG)