Uni Seal P is a two component polysulphide sealant which, when mixed together, cures to form a flexible rubber seal. It gives excellent adhesion to glass, metals, concrete, masonry, wood, plastics, and many other building substrates. It is capable of withstanding repeated extension and compression without loss of adhesion. Uni Seal P gives outstanding resistance to deterioration by weathering, oils, fuel, water, ultra violet, ozone etc, remains unaffected by most alkalis, and dilute acids.
Uni Seal P Uses
Two Component Pourable Grade Polysulphide Joint Sealant
Sealing of expansion, contraction & construction joints in building structures such as :
Uni Seal P Advantages
- Excellent chemical resistance.
- Excellent UV resistance.
- High movement accommodation.
- Resists Jet fuels and Aviation fuels.
- Cure at ambient temperature to a tough, elastic &
- Flexible rubber like material.
- Bonds strongly to most of the building materials.
- Durable, remains unaffected by UV rays, Ozoneand weathering conditions.
- Resistant to water, salt water, 10% diluted, acids except nitric acid, 10% alkalies, most of the
Typical Properties & Specifications
| Sr. No. | Properties | Specification |
|---|---|---|
| 1 | Form | Twp-part compound Base :
Paste, Hardener : Paste |
| 2 | Colour | Grey (mixed) |
| 3 | Specific Gravity | 1.50 – 1.55 kg/lit. |
| 4 | Staining | Nil |
| 5 | UV Resistance | Good |
| 6 | Chemical Resistance | Excellent |
| 7 | Movement Accommodation | 30 % in Butt joints, 50 % in Lap joints |
| 8 | Pot Life | Min. 2 hrs at 30 C |
| 9 | Setting Time | 18 hrs. at 30 C |
| 10 | Cure Time | 7 days at 30 C |
| 11 | Flash Point | Over 65 C |
Instruction for Uni Seal P Use
Two Component Pourable Grade Polysulphide Joint Sealant
Surface Preparation
- Surface preparation is the most important step before application of sealant to get best results and to avoid failure.
- The joint surface must be dry, free from dust, coatings, bituminous mastics, concrete curing agents, mould release agents, oils, greases and loose particles.
- Clean the joint surface by wire brush and sanding with emery paper.
- Remove dust by compressed air or paint brush.
- Wipe out oil & grease with a cleaner.
Back Up Material
Insert compressible polyethylene, polyurethane,
thermocol foam, neoprene, polyethylene, butyl rods as a back-up material to
control depth of sealant in the joint & to provide support for tooling of
the sealant.
Priming
Apply two coats of Uni seal by brush on the sides of
the joint surface at an interval of 30 minutes.
Masking Tape
Apply masking tape such as self-adhesive polyethylene,
cellophane or cloth tape on both edges of the joint. It is used to improve
the neatness of the finished seal by protecting the face edges of the
joint. It may be removed immediately after tooling of the sealant.
Mixing
The Base and Hardener compounds supplied are
packed in pre- weighed quantity as per the mixing ratio. After the
application of Primer, mix the material of individual container. Transfer
entire quantity of Hardener to the Base compound tin and mix it thoroughly
to a uniform, homogenous grey colour. Mixing can be done manually with
spatula/palette knife or special flat stirrer attached to a low speed
electric mixer less than 500 r.p.m.
Application
Apply the mixed gun grade compound by means of a
spatula or by filling into a plastic cartridge which is then placed into
the
hand held caulking gun into the joint. Avoid application below 10°C
temperature.
Tooling and Finishing
It is desirable that a smooth surfaces is obtained.
Tool the sealant by pressing the puffy knife or flat tool against the
sealant surface, moving along the length of the joint. Tooling breaks air
bubbles and exposes any air pockets present. Tooling compresses the
sealant, thus promoting adhesion to the joint sides.
After tooling, the masking tape should be removed immediately. Soap solution can be used to smoothen the sealant surface.
After tooling, the masking tape should be removed immediately. Soap solution can be used to smoothen the sealant surface.
Tools Cleaning
Tools and equipment can be easily cleaned with a UNI
TOOL CLEANER.
Estimating Of Quantity
To estimate quantities of sealant required, the formula
given below can be used to calculate the number of (1 Kg or 5 Kg) tins
needed. To calculate the weight (in Kg.) of sealant required for a joint of
particular length (in meters), the following formula can be used : Weight
in Kg = (1.6 X W X D X L)/1000 Where W & D are in mm and L is in metre,
Example : (1) W (Width of joint) = 10 mm (2) D (Debth of joint) = 10 mm (3)
L (Length of joint) = 12.5 mtr; Weight in Kg = (1.6 X 10 X 10 X 12.5) /
1000 = 2.00 Kg of sealant, Estimates for Uni Seal P Primer are arrived at
as below : 1 Litre of Uni Seal P Primer would cover 6 to 7 m² of joint area
or about 1 litre of Uni Seal PRIMER would be required for 30 Kg of Uni Seal
P sealant.
Packing
Uni Seal P is supplied in 1 kg. 5 kg. containers
Shelf Life & Storage
Uni Seal P has a shelf life of 12 months from date of
manufacture when kept at a temperature between 5 C to 45 C and store in the
original, unopened bags. All material shall be stored under cover in a
manner that will prevent damage preferable on pallets and protected from
excessive heat and moisture. Do not freeze.
Quality Assurance
Universal Construction Chemicals is a firm of Assessed
Capability. The company's quality system conforms to ISO 9001:2015.
Health & Safety
Uni Seal P should not come into contact with skin, eyes
or be swallowed. Protective glasses should be worn during mixing and
application. Should Uni Seal P come into contact with skin, remove before
hardening by washing with soap and water. Should accidental eye contact
occur wash with plenty of water and seek medical advice. If swallowed seek
medical advice immediately. Do not induce vomiting. For full health and
safety data refer to Product Safety Data Sheet.
