Two-component trafficable, jet fuel resistant heavy duty pitch modified polyurethane sealant
Vetoflex PU786 is a two-part, high-performance, elastomeric, chemically-curing, multi-purpose pitch modified polyurethane joint sealant. When cures it forms an elastic sealant with high mechanical strength, abrasion resistance, and with high extensibility to withstand long-term dynamic movement. Vetoflex PU786 can be applied to joints between 5 and 50 mm wide. The product is available in both Pouring and Gun grades to facilitate application on horizontal and vertical joints.
- ISO 11600, F 20 LM
- ASTM C920, Class 20, Type M, Grade P&NS.
- Federal Specification, TT-S-00227E, Type I & II, class A
- BS 4254 and 5212
- Vetoflex PU786 - Pouring Grade is supplied in 4 Liter Kits
- Vetoflex PU786 - Gun Grade is supplied in 2.5 Liter Kits
Original sealed container of Vetoflex PU786 has a shelf life of 12 months provided it is stored clear of ground in a dry shaded place below 25ºC.
Vetoflex PU786 use should follow standard concrete joints practices, sealants need either backing rod or joint breaker tapes to prohibit 3 point adhesion and allow for movement freedom in desired design. Saveto recommends the use of ACI 224.3-95 (re-approved 2013) for joint design.
All porous surfaces should be primed with Vetoprime EP491. Dense concrete and steel substrates shall be primed with Vetoprime 490. The substrates should be dry before applying primer. Prime the sides of prepared joints with soft brush. Primer should be applied in thin uniform film. Allow to become tack free before applying the sealant. In order to keep the joint edges clean, use masking tape on the joint sides and remove immediately after finish sealant application.
The components of Vetoflex PU786 are supplied in the correct mixing ratio. Add the entire contents of the hardener component into the base container and mix together thoroughly for three minutes using a slow speed drill (300 to 500 rpm) fitted with a suitable mixing paddle. Ensure any settlement is thoroughly dispersed. The sides of the container should then be scraped down to ensure that any unmixed components do not remain. Mixing should then continue for a further 2minutes.
The mixed Vetoflex PU786 (PG) can be poured directly from the mixing container by compressing the sides to form a pouring lip. Pour into the prepared joint to the required level, should the joint width prohibit direct pouring from the container, the mixed material can be poured into a Vetoflex Barrel gun and applied to the joint. It may be necessary after a few minutes to top up the level of the sealant after it has flowed into all joint irregularities. Finally, strip of any masking tape that may have been used. When using gun grade, follow the same application procedure while using a bulk gun, the bulk gun can be filled using a follower plate.
Vetoflex PU786 should be removed from tools, equipment and mixers with Vetonit Solvent XX400 immediately after use. Hardened material can only be removed mechanically.
Clean all joint surfaces and remove any dust, unsound material, plaster, oil, paint, grease, corrosion deposits or algae. Roughen the surfaces, remove any laitence and expose aggregate by light scabbling or grit-blasting. Oil and grease deposits should be removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser. Any expansion joint filler must be checked to ensure it is tightly packed and no gaps or voids exist at the base of the sealing slot before positioning a bond breaker. 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 a bond breaker tape or back-up strip must be used. Where a particularly neat finish is required, mask the face edges of the joint before sealing and remove immediately after tooling is completed.
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.
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 in accordance with any advice, specification, recommendation or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.
Hard copies of TDSs are printed once or twice a year, while our technical data sheets are continuously being 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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