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Sika PRO-3 Purform, Polyurethane Sealant for Floor Joints and Civil Engineering, 300 ml

Sika PRO-3 Purform, Polyurethane Sealant for Floor Joints and Civil Engineering, 300 ml

Aditivi
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Ambalare 300 ml
Culoare N/A
Condiții de depozitare The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to the packaging.Refer to the current Safety Data Sheet for information on safe handling and storage.
Densitate (1.30 ± 0.1) kg/l(ISO 1183-1)
Valoare pH N/A

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)

Movement Capability

± 25 %

(EN ISO 9047)

± 35 %

(EN 14188-2)

± 50 %

(ASTM C719)

Elastic Recovery

90 %

(EN ISO 7389)

Tear Propagation Resistance

9.0 N/mm

(ISO 34-2)

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

Maximum

+40 °C

Minimum

0 °C

For applications at temperatures below +5 °C, please contact Sika Techincal Services.
Substrate Temperature

Maximum

+40 °C

Minimum

0 °C

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.)