Derby, D91, PU Mastic

Product Definition
Derby D91 PU mastic is a single component polyurethane-based sealant material which is cured by humidity of the air.

It is cured by humidity of the air. It can be painted after curing. Its temperature resistance is between -40°C and +90°C. (It is resistant to +120°C for a very short time)

The places of use
It is used as sealant on wall, curtain and in prefabricated concrete joint gaps of constructions, also in manufacture and montage of iron, sheet, aluminum, stainless steel, lead, copper, ceramic, glass, wood, plastic surfaces, air ducts, air conditioning, as sealant in rainwater gutters and joints of rainwater collecting pipes on the roofs, in joint works of metal sheet so as to reduce the vibration, in isolation of water, gas, air and dust permeable gaps.

Shelf life
Keep the packages at dry and cool ambient. Do not store in temperature higher than +25°C. Shelf life of unpacked packages is almost 12 months.

It is applied in between +5°C and +35°C. Apply D91 on surface with an appropriate mastic gun. Adhesive thickness to be applied changes as per the type of materials to be adhered. After application, materials should be gathered within encrusting time. Until completion of curing, materials should be kept together mechanically. Curing time can change depending upon temperature, humidity and thickness of adhesive.



Chemical Structure Polyurethane  
Density 1.4 g/cm³ (DIN 53479)
Viscosity Soft, Resistant to Flow  
Shore A Hardness 40 ± 5 (DIN 53505)
Breaking Strain > 600  (DIN 53504)
Tensile Force 0.90 N/mm² (DIN 53504)
Tearing Strength 6 N/mm (DIN 53515)
Tensile Strength 1.50 N/mm² (DIN 53504)
Volume Change Under % 3  
Encrusting Time ~30 – 35 minutes  
Curing Time 3 mm 24 Hourste (+20°C, % 65 R.H.)  

Color: White, Grey, Black

Product Name Amount per Package Package Weight/Kg Package Dimensions
D91 PU Mastic Cartridge 25 Pieces 8 Kg 300x260x250 mm
D91 PU Mastic Sausage 20 Pieces 12 Kg 355x235x205 mm