Liquid Synthetic Rubber Coating

Hydroprene is a material produced from a synthetic rubber which is liquefied and modified to give a highly protective coating. Hydroprene is usually applied by brush or roller but can even be dipped if required.

Typical Uses.

  • External protection of tanks,valves,pipes and ducking.
  • Protection of electrical components for the automotive industry.
  • General protection of structural steelworks, metal pilings and other constructions.

Reasons for using Hydroprene.

  • One component quick air cutting.
  • Unaffected by many salts, alkalis, certain oils and acids.
  • Tough yet resilient with good adhesion.
  • Long life expectancy.

Finish. Resilient, semi-matt black and non porous.

Coverage. 3 M² per litre at 75 microns dry film thickness.

  1. Excellent adhesion to many metals, concrete and wood. For certain surfaces  such as concrete, a primer is required. Refer to separate data sheet.

Flash Point. Hydroprene  1o C

Thinners     -3o C

Shelf Life.    Hydroprene  9 to 12 months

Thinners      2 years

( Stored in unopened containers between 5o C and 25o C)

Pack Sizes.   Hydroprene Black (lined tin) supplied in 5 & 25 Litre Units                      Thinners    5 litre Unit

Properties continued.

Temperature Resistance. Approx 105o C (Dry Heat)

Saltspray Resistance.   Excellent.

Oil Resistance.    Excellent to most oils.

Chemical Resistance. Very good resistance to many chemical fumes and splashes.

Application Instructions

Metal should be clean dry and free from any contaminants or oils. Concrete should be fully cured, clean and laitance free. Wood should be clean and dry with the surface wiped with solvent to remove any natural oils.

Apply by brush or roller at 75 to 100 microns wet film thickness. Allow to cure between 45 minutes and 25 hours for subsequent coats. For Dipping a typical build of 75 microns can be obtained per coat. If the maximum overcoat time be exceeded, the surface should be softened using Hydroprene thinners prior to application.

Hydroprene Thinners.

If required Hydroprene Thinners may be added to the liquid Hydroprene to reduce the viscosity, typically 10% is sufficient.

Add the thinners to the liquid Hydroprene and stir slowly using an air driven drill and paddle, or a flameproof electric drill and paddle. Small quantities may be hand stirred.

Avoid breathing the vapour and use in well ventilated areas. Refer to the Hydroprene Health and Safety data sheet for full information on the correct handling of these products.

Health & Safety at Work Act 1974

Warnings and information concerning the safe handling of our products are displayed on their containers. It is the purchaser’s responsibility to ensure that the materials are stored and handled within the meaning of the above act.

Conditions of Sale.

All RJR products are manufactured to high standards and sold subject to the company’s standard conditions of sale. A copy is available upon request.


Hydroprene data sheet