Polyurethane sealant for floor joints and civil engineering applications Sikaflex® PRO-3 Purform® is a 1-part, moisture-curing, elastic polyurethane sealant. It seals many kinds of joint configurations in floors and civil engineering structures. The elasticity is maintained over a wide temperature range, and high mechanical and chemical resistance provides good durability. - High movement capability: ±25 % (ISO 9047), ±50 % (ASTM C719).
- Fast development of mechanical properties.
- Very good mechanical resistance.
- Extended application range to lower temperatures.
- Very good resistance to specific chemicals.
- Very good resistance to weathering.
- Non-staining to a wide range of substrates.
- Monomeric diisocyanate content <0.1 %: no user safety training needed (REACH restriction 2023, Annex XVII entry 74).
- Bubble-free curing.
- Good adhesion to many construction materials.
- Durable anti-pick formulation for joints subject to idle tampering and acts of vandalism where traditional sealants may be more easily damaged or removed.
|
Usage Sikaflex® PRO-3 Purform® is used for sealing in the following areas: - Interior or exterior applications.
- Food industry.
- Clean rooms.
- Warehouse and production floor areas.
- Sewage treatment plants.
- Tunnels.
- Car park decks.
- Trafficked areas.
- Secure environments where a tamper-resistant sealant may be required e.g. prisons & secure units (supervised or hard to reach areas).
Advantages - High movement capability: ±25 % (ISO 9047), ±50 % (ASTM C719).
- Fast development of mechanical properties.
- Very good mechanical resistance.
- Extended application range to lower temperatures.
- Very good resistance to specific chemicals.
- Very good resistance to weathering.
- Non-staining to a wide range of substrates.
- Monomeric diisocyanate content <0.1 %: no user safety training needed (REACH restriction 2023, Annex XVII entry 74).
- Bubble-free curing.
- Good adhesion to many construction materials.
- Durable anti-pick formulation for joints subject to idle tampering and acts of vandalism where traditional sealants may be more easily damaged or removed.
Packaging 300 ml cartridge | 12 cartridges per box | 600 ml cylindrical foil pack | 20 foil packs per box |
Refer to the current price list for available packaging variations. Colour Available in a range of colours. Refer to the current price list for the colour range. |
Technical Information Shore A Hardness 40 (after 28 days) 80 % of final hardness | Time | +5 °C | 6 days | +10 °C | 5 days | +23 °C | 2 days | +40 °C | 1 day |
Secant Tensile Modulus 0.65 N/mm2 at 100 % elongation (+23 °C) 1.00 N/mm2 at 100 % elongation (−20 °C) | (ISO 8339) |
Tear Propagation Resistance
Service Temperature | Maximum | +80 °C | | Minimum | -40 °C |
Chemical Resistance Resistant to many chemicals. Refer to the following test report or contact Sika Technical Services for additional information: Chemical Resistance, DIN EN 14187, SKZ, Report No. 208323/20.
Resistance to Weathering High resistance to weathering (10 cycles) | (ISO 19862) |
Joint Design For movement joints, the width must be at least 8 mm and should not exceed 40 mm. For non-movement joints such as connection joints in interior areas, the joint width can be less than 8 mm. The joint dimensions must be designed to suit the movement capability of the sealant. In all cases joints must be at least 8 mm deep, or a have a width to depth ratio of 1 : 0.5 for the facade joints or 1 : 0.8 for floor joints whichever is greater. For more information about joint design and calculations refer to the Sika document Design guideline: Dimensioning of construction joints or contact Sika Technical Services.
|
Application Information Sag Flow 0 mm (20 mm profile, +50 °C) | (EN ISO 7390) |
Product Temperature Maximum | +40 °C | Minimum | +5 °C |
Ambient Air Temperature For applications at temperatures below +5 °C, please contact Sika Techincal Services. Substrate Temperature The substrate temperature must be +3 °C above dew point temperature and free from frost and ice. Backing Material Use closed cell, polyethylene foam backing rod. Curing Rate 3.5 mm/24 hours (+23 °C / 50 % r.h.) Skin Time 50 minutes (+23 °C / 50 % r.h.) Tooling Time 40 minutes (+23 °C / 50 % r.h.) |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
