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Premcrete Preflex PU - Hybrid Polyurethane Sealant

Verified by manufacturer 6 months ago

Premcrete

Hybrid polyurethane sealant.

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Application

PREFLEX PU is supplied in a foil sachet, which fits into a PREMCRETE 600ml BULK SEALANT GUN. The end of the sachet is cut off before screwing the nozzle into place. The sealant may then be extruded into the joint, using the correct size nozzle for the joint width.

It is important to ensure that the depth of the joint is no greater than the width of the joint, otherwise curing of the sealant will be impeded. Once the sealant has been extruded into the joint then it may be tooled to a smooth finish using a suitable spatula.

Description

PREFLEX PU is a high modulus single-component polyurethane hybrid sealant which exhibits excellent adhesive properties and remains permanently elastic once cured. The cured sealant has good resistance to water and a wide range of industrial chemicals.

  • Withstands vehicular trafficking.
  • Cures to form a tough but flexible seal.
  • Excellent abrasion resistance.

General information

Color

Grey

Material

Polyurethane

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Pr_30_31_76_65 Polyurethane (PUR) construction joint sealantsPrimary

CAWS

E40/530 Sealant

Product range

Joint Sealants

Specification data - Polyurethane (PUR) construction joint sealants

Material

One-part polyurethane.

Colour

Grey.

Joint width

20–40 x 10–40 mm (w x d).

Movement

Butt joints 20% (movement in tension and compression).

Hardness (shore A)

50.

Elastic recovery

>90%.

Elongation at break

400%.

Modulus of elasticity

0.94 N/mm².

Curing time

3 mm/day.

Application temperature

5–40°C.

Literature

Preflex PU TDS

Preflex PU TDS