Single component polyurethane construction sealant
PU821

Detailed Product Description

PU821 is one component polyurethane construction sealant of low modulus

Features
1. Low modulus and high elasticity, good sealing and water-proof property
2. One component, convenient to construct, nonpoisonous and tasteless after curing, green and environmental
3. Bonding well with many substrates, no corrosion and pollution to substrate
4. Good compatibility between new and used adhesive, convenient to repair
5. Excellent aging, water and oil resistance, mouldiness

Usage
1. Sealing of expansion and settlement joint of construction
2. Sealing of upstream face crack of drainage pipeline
3. Sealing of through holes on wall and at floor concrete
4. Sealing of joints of prefab, side fascia, stone and color steel plate

Data Table

Model Number: PU 821
Main Raw Material: Polyurethane
Color: Black/White/Gray
Density: 1.35±+-0.05Gr/CC
Sagging: &le<1mm
Volatile content: &le<4%
Extrudability: &ge>80ml/min
Touch dry time: &le<180Min
Elastic recovery: &ge>80%
Pollution properties: Non
Elongation at break: &ge>600%
Application temperature: 5~35
Note:
A. All data above ware tested under standardized condition.
B. All data listed in the chart were for rhe generalized item in the series; Please refer to the related datasheet for special items.
C. Storage condition has a direct impact to the products' shelf life, Please refer to the instruction for special items' storing.

Operation

Clean before operation
Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating. Dust and loose particles should be cleaned.

Direction of operation
Tool: Manual or pneumatic plunger caulking gun

For cartridge
1. Cut nozzle to give the required angle and bead size
2. Pierce the membrane at the top of the cartridge and screw on the nozzle
3. Place the cartridge in an applicator gun and squeeze the trigger with equal strength

For sausage
1. Clip the end of the sausage and place in barrel gun
2. Screw end cap and nozzle on to barrel gun
3. Using the trigger extrude the sealant with equal strength

Attention of operation
Wear suitable protective clothing, gloves and eye/face Protection. After contact with skin, wash immediately with plenty of water and soap. In case of accident or if you feel unwell, seek medical advice immediately

Package and Storage

Package Storage
310ml cartridge, 20PCS/carton Keep in cool and ventilative place
400ml/600ml sausage, 20PCS/carton Temperature&le<25 humidity&le>50%RH
Color: Black /White/Gray Shelf life: 9 months