Sealants & Joints
Vetoflex PU780

High performance, elastomeric, single component polyurethane sealant
(Formerly known as Saveto PU1)

Primerless sealing pre-cast panel joints and expansion joints.
As a general elastic adhesive for materials with dissimilar properties and thermal expansion coefficients.
Movement and static joint sealing in various construction industry requirements.
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Technical Information
Product Description

Vetoflex PU780 is one part, moisture curing, low modulus elastomeric joint sealant based on polyurethane. It is suitable for movement and connection joints for indoor and outdoor applications. Vetofl ex PU780 is a paintable weather-resistant sealant with versatile usage both as a sealant and a general adhesive in the construction industry for various substrates, including concrete, steel, wood, and many others.

  • Weather-resistant, suitable for External & Internal applications.
  • Easy application using a caulking gun.
  • Paintable with non-solvent or water-based paints after curing in static joints (i.e., around door perimeters).
  • No crack or craze under UV exposure.
  • Non-sag and non-staining.
  • It does not require a primer and exhibits tenacious adhesion to most building materials.
  • Excellent movement accommodation.
  • ASTM C920 Type S, Grade NS, Class 25, use T1, NT, A, and M
  • ISO 11600, F 25 LM
  • TT-S-00230C Class A, Type II
  • ASTM C1183
Packaging & Coverage

Vetoflex PU780 is supplied in 600 mL Sausages; Consumption is as follows:

Joint Width (mm): 10 ; Joint Depth (mm): 8 ; Length Filled / Sausage (m): 7.5

Joint Width (mm): 15 ; Joint Depth (mm): 8 ; Length Filled / Sausage (m): 4.5

Joint Width (mm): 20 ; Joint Depth (mm):10 ; Length Filled / Sausage (m): 2.5

Joint Width (mm): 25 ; Joint Depth (mm): 12 ; Length Filled / Sausage (m): 1.6

Joint Width (mm): 30 ; Joint Depth (mm):15 ; Length Filled / Sausage (m): 1.3

Stated consumption data are for general guidance. Actual consumption depends on the nature of substrate, method of application, and wastage.

Shelf Life & Storage

The original sealed sausages of Vetoflex PU780 have a shelf life of 12 months, provided it is stored clear of ground in a dry, shaded place below 25ºC.

White, Grey, Beige as standard, others upon request.
Application Information
Instructions for use

Design Criteria

Vetoflex PU780 use should follow standard concrete joints practices; sealants need either backing rod or joint breaker tapes to prohibit 3 point adhesion and allow movement freedom in the desired design. Saveto recommends the use of ACI 224.3-95 (re-approved 2013) for joint design.

Joint Design

Standard design dimensions for concrete elements as per DIN 18 540 /table 3:

Joint Distance (m) 2 2-3.5 3.5-5 5-6.5 6.5-8
Design Joint Width (mm) 15 20 25 30 35
Minimum Joint Width (mm) 10 15 20 25 30
Joint Depth 8 10 12 15 15


The use of a primer is generally not required when using Vetofl ex PU780. However, where it is hard to bond substrates such as PVC or where highly porous substrates are in question, please contact Saveto local office for assistance on suitable primer choice.


Cut and remove the end of the sachet and place the sachet in the Saveto bulk gun. Fit the nozzle and cut at 45 degrees to a suitable size for sealing the joint. Extrude the sealant firmly into the joint. Tool flush within 5 minutes of application to ensure good contact between the sealant and the substrate.


Remove Vetoflex PU780 from tools, equipment, and mixers with Vetonit Solvent XX400 immediately after use. Hardened material can only be removed mechanically.

Surface Preparation

Clean all joint surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits, or algae. Roughen the surfaces, remove any laitance and expose aggregate by light scabbling or grit-blasting. Remove oil and grease deposits by steam cleaning, detergent scrubbing, or use a proprietary degreaser. Before positioning a bond breaker, check any expansion joint filler to ensure it is tightly packed with no gaps or voids at the base of the sealing slot. The use of a bond breaker is not required in expansion joints containing cellular polyethylene joint filler, backing rod (Vetoflex PBR). For construction or contraction joints, use a bond breaker tape or back-up strip.

Where a particularly neat finish is required, mask the joint's face edges before sealing and remove immediately after tooling is completed.

Additional Information
Health & Sefety

Vetoflex PU780 is not classified as hazardous. It contains Isocyanate.

For information and advice on the safe handling, storage, and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological, and other safety-related data.

Important note

Saveto endeavors to ensure that any advice, recommendations, information it may give is accurate and correct. It cannot accept any liability, either directly or indirectly, arising from the use of its products because it has no direct or continuous control over where or how its products are applied, whether or not following any advice, specification, recommendation, or information given by us. Saveto has the right to change any of the technical data sheets' specifications upon its discretion without prior notification. 

Hard copies of TDSs are printed once or twice a year. Our technical data sheets are continuously updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs. 

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Saudi Vetonit Co. Ltd. (SAVETO)
P.O. Box 52235 Riyadh 11563, KSA
Toll: (+966 11) 265 3334
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800 124 9009
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