Polyurethane Construction Joint Sealant

Good for constuction joint uses;
Can be made into white, black, grey colors;
310ml, 400ml & 600ml package

Polyurethane Sealant for Construction Uses

Description:

Kater PU521 is one component polyurethane based construction sealant. It is low modulus and cured by reaction with atmospheric moisture to form a soft rubber like material with moderate elasticity and high adhesion strength.

Where to use
Seal for building wall and cover board, frame joint, window seal (inside & outside), water proof joint (inside & outside), water tank and water drainage structural joint, parapet and road separating joint and general civil project expansion and contraction joint.

Characteristic
Medium curing speed Good adhesion strength
Repairable Good chemical corrosion resistance
Good water proof Paint able
One part no mixing Excellent weather proof, aging resistant property
Abrasion able Excellent noise, vibration and Impaction resistant
Damp resistant No sagging
Anti mildew

Typical Data

No
Item
Test result
1
Appearance
Black, gray, white paste
2
Specific gravity
1.4 - 1.6
3
Skinning time
≤ 24h
4
Low temperature flexiblity
- 60°C
5
Tensile adhesion
≥ 0.9Mpa
6
Elongation
≥ 800%
7
Elastic recovery
88 - 94%
8
Adhesion damaging area
20 - 37%
9
Extrudability
250 - 330ml/mm
10
Pull and compress cycle
7020
11
Adhesion failure area
4.0 ~ 5.0%
12
Movement capability
± 25%
13
Hardness, Shore A
30 ± 5
14
Service temperature range
-40°C~75°C
15
Application temperature
5°C~40°C
16
Maximum joint width
35mm
17
Minimum joint depth
8mm
18
Staining
No