SUNJOINT SEAL (PGG)

SUNJOINT SEAL (PGG) is a specially formulated liquid polysulphide polymer. This is available in two components polysulphide and curing agent. When mixed it forms a tough flexible, durable rubber like material which adheres to most common construction surfaces, steel, glass and glazed ceramics etc. This product meets the requirements of ASTM C 920(G. GRADE) and / or BS 4254.


Uses

Because of its very high elastomeric & good adhesive property as well as excellent resistance to many oils, solvents and other chemicals, it is extensively used to provide fully waterproof seals in joints in bridges, concrete pavements, floor pre-cast concrete constructions, subways, basements & building super structures.


Properties

Typical properties of joints SUNJOINT SEAL (PGG) are as follows:

Service temperature limits
-25 to +80 C
Application temperature limit
+5 to +40 C
shrinkage
Negligible
Pot life at 200C
2 hrs
Initial set at 200C
24 hrs
Full cure at 200C
2 Weeks
Chemical resistance
Very good
UV resistance
Very good
Movement accommodation (MAF)

Bull joints
25%
Lap joints
50%
Joint design


For cyclic movement joints should be designed properly to give an optimum width to depth ratio of 2:1.

For porous substrates minimum sealant depth is 10mm & for nonporous substrates the minimum depth is 6mm. For horizontal joints the minimum depth should be 12.5 mm maintained and for joints subjected to traffic or hydraulic pressure the minimum depth should be 20 mm.


Direction for use

The joint surface required to be primed before application of the sealant. Two primers are available.

SUNJOINTSEAL PRIMER A and SUNJOINTSEAL PRIMER B.


Preparation of substrate

Surface must be completely dry and free from all dirt, dust, cement laitance and any deleterious matter. This can be achieved by wire brushing, followed by blowing clean air. Metallic surfaces must be free of rust, scale or protective lacquers.

The joint surfaces required top be primed before application of the sealent.

Two primers are available SUNJOINTSEAL PRIMER A and SUNJOINTSEAL PRIMER B.


Priming

Use and SUNJOINTSEAL PRIMER A porous surfaces such as concrete, brick, stone etc.

And and SUNJOINTSEAL PRIMER B Non porous surfaces such as steel, glazed ceramics, glass etc.

Pour a small amount of the primer into a clean container and liberally apply a coat of primer with a soft brush to the required substrate and allow to dry / tack free (20-45 minutes) before application of the and SUNJOINTSEAL (PGG).

If primer is left for more than 3 hrs, re-priming is required. Clean all brushes immediately with kerosene.


Consumption of primers

SUNJOINTSEAL PRIMER A Approximate. 50-55 Sq.ft/ltr/coat

SUNJOINTSEAL PRIMER B Approximate. 65-70 Sq.ft/ltr/coat


Backup material

When using filler boards or any other backup materials, it should be advisable to maintain the design depth before applying the sealant. In expansion joints, movement accommodation of sealant will be restricted if it bonds +to the fillers board. It is therefore, essential to insert bond breaking tape into the joint in order to prevent adhesion.


Application of SUNJOINTSEAL (PGG)

The full quantity of curing agent must be transferred into the large container. Mix for 4-5 minutes by using a flat bladed stirrer coupled to a slow speed (150rpm) electric drill or by iron rod. When thoroughly mixed both components should be completely interdispersed and the material be of uniform color. Then load the mixed material into sealant gun and apply to the primed surface. In order to displace any air bubbles present in the sealant caused by mixing and to get good adhesion, it is advisable to finish by tooling with a rounded spatula or similar object. The outermost surface of the sealant should finish with a concave profile. Protect the finished seal from inclement weather and water contact until initial set has taken place.


Coverage

Length in running mtrs per kg of Sunjointseal (PGG) = 650 / W X D

W = Width in mm

D = Depth in mm


Packing

1 kg and 4 kg

Shelf life

Twelve months in the original closed container

Storage


Store in a cool, dry indoor place.