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ROCKSEAL SS450
DESCRIPTION
ROCKSEAL SS450 is a one-part acetoxy-curing silicone sealant that provides a permanent flexible watertightseal for general purpose sealing in and around the home.
FEATURES / ADVANTAGES
- Non-sag – can apply on vertical surfaces
- Heat resistance up to +120°C
- Flexible at temperatures as low as -40°C
- Mould resistant – suitable for use in damp areas e.g. showers, bathrooms
- Versatile – adheres to a wide variety of substrates
- Waterproof – suitable for external applications
- Excellent UV resistance and abrasion resistance – long lasting durable bond
- Unaffected by alcohols, dilute acids and alkalis, soap and household detergents
- Excellent color fastness; clear grades are non yellowing
- Moisture curing system; cure rate is unaffected by low ambient temperatures
TYPICAL CHARACTERISTICS
Uncured silicone
| Appearance | Homogenous non sagging | |
| paste in clear, white, bronze, | ||
| grey and black | ||
| Density | N/A | |
| Skin over time | BS 5889 AP A | Approximately 20 – 30 |
| minutes | ||
| Curing time | Approximately 24 hours per | |
| 2mm | ||
| Slump | NFP 5501 | 0.00mm |
| Coverage – 300ml cartridge | 100 microns (Theoretical) | 12 meters (5mm x 5mm joint) |
Cured silicone
| Service temperature range | Min.–40°C to Max. +120°C | |
| Tear strength | N/A | |
| Tensile strength | DIN 53504 | 1.3 – 1.5 Mpa |
| Modulus at 100% elongation | DIN 53504 | 0.33 – 0.36 Mpa |
| Movement accommodation factor | 25% | |
| Ultimate elongation | DIN 53504 | 500% |
| Shore A hardness | DIN 53505 | 17% |
DIRECTIONS FOR USE
SURFACE PREPARTION
Surfaces coming into direct contact with ROCKSEAL SS450 Silicone Sealant must be clean, dry, and free from all loose materials, dust, dirt, oil, rust and any other contaminants. Non-porous substrates such as metals, glass and plastics should be degreased with a solvent. Plastics can be lightly abraded with emery paper. On no account should any type of alcohol be used for surface cleaning – alcohols inhibit the cure of silicones. Soaps or detergents used to clean the surface must be rinsed away thoroughly with clean water to ensure that all traces of the soaps are removed before sealing. Poor surface preparation may result in the delaminating of the silicone
INSTRUCTIONS
Ensure surfaces are prepared as above. Cut tip off cartridge and screw nozzle onto cartridge. Cut the tip of nozzle at an angle to achieve the desired bead size. Apply silicone with a caulking gun in a continuous bead to the prepared joint. Use masking tape to get a clean, even sealant line and to eliminate cleaning difficulties on porous surfaces. Be sure to remove the tape before sealant begins to skin. Smooth down after application (within 3-5 minutes) before skin formation occurs, by using a flat or rounded tool or even a finger, dipped in soapy water. Sealant will be touching dry within 1hr and reaches full cure after approximately 24hrs.
A pungent vinegar -like odour will be noted during application but will disappear as the sealant cures. If the area being sealed, needs to be painted, ensure the paint has dried COMPLETELY before sealing
The following formula is an approximate guideline in order to calculate yield for a standard 280ml cartridge L = 280 / (W x D)
Where L = Length of sealant in meters per cartridge
W = Width of joint in mm
D = Depth of joint in mm
ADHESION
Silicone Sealant exhibits excellent primer less adhesion to many non-porous materials e.g. ceramics, glass, enamel, porcelain, coated wood, painted surfaces, canvas, stainless steel, aluminum, some rubbers and some plastics (epoxide, polyester, polyacrylate, polystyrene, for mica, fiberglass, acrylics, polycarbonates and rigid PVC)
CLEANING OF TOOLS
Uncured silicone can easily be removed from hands or tools using a clean cloth soaked in solvent such as turpentine or paraffin. If removing uncured silicone from clothing, check fabric color fastness before using the above mentioned solvents. Sealant will be touching dry within 1hr and reaches full cure after approximately 24hrs. When fully cured, sealant can be removed by mechanical means, i.e. using a sharp knife or chemically, using Silicone Stripper.
STORAGE AND SHELF LIFE
Silicone Sealant has a shelf life of at least 18 months if stored in a cool, dry place below 25°C in its original sealed moisture-tight container If the material is kept beyond the recommended shelf life, it is not necessarily un-usable; a check should be performed to observe whether the product is still workable, apply-able and uncured To maximize the shelf life of the opened tube, it is advisable to create an airtight environment. This can be achieved by removing the nozzle and wiping down the opening, placing a piece of plastic over it, screwing on the nozzle, and storing in a cool environment.
PACKING
280ml Cartridge, Special Packing Available on demand
PRECAUTIONS
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek medical attention. Reseal containers after use. Use in well ventilated areas and avoid inhalation.
DISCLAIMER
The above information and details herein are based on the tests conducted & experience on application and usage. The user is advised to carry out the test and take trials to satisfy on the suitability of the products and meeting his requirement considering the prevailing conditions prior to apply/ using it on larger area. As the conditions under which the products are used or transported are beyond our control. We would not hold ourselves responsible on its consequential nonperformance.