Primer 760 – PU to Metal – 0.1kg

R83.95 incl VAT

All prices shown include VAT

Primer 760 – PU to Metal is a single coat adhesive for bonding castable and RIM urethane elastomers to metal.


  • PRIMER 760 adhesive is characterised by bond strengths greater than tear strength of the urethane substrate, with excellent retention of properties after exposure to harsh environments.
  • PRIMER 760 will bond a wide variety of both prepolymers of varying hardness to all types of metal.
  • PRIMER 760 bonds RIM urethane elastomers directly to aluminium or steel without the need for primers or for prebaking.

Availability: 16 in stock

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Safe & Secure Shipping to all South African addresses.

When Do I Get It?

Shipping time is 2 - 5 business days. Excludes weekends & Public Holidays.

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In-Store Sales

Shop in-store at AMT Composites in Johannesburg, Cape Town & Durban.

Please note

Our website reflects stock availability for our Johannesburg AMT Composites physical store. Please contact us to check availability for our Cape Town & Durban stores.
  • Shipping may only be to a physical address within the borders of South Africa. No P.O Box’s allowed.
  • Shipping to outlying or remote areas like farms and game reserves may attract an additional fee.
  • The delivery time to city areas is usually between 2 and 5 working days*. This excludes weekends and public holidays. *Reckoned from time of dispatch to time of arrival to client. This is an estimate and not guaranteed.
Courier Service
We use 4 courier companies for delivery. With sophisticated track and trace equipment, you can pinpoint exactly where your parcel is, from the moment it is dispatched by us, until it’s safely handed over to you the recipient. Your parcel is well packaged and wrapped before delivery. All parcels can be insured for the journey to your door.

We charge a weight based shipping fee.

  1. Free Shipping for all orders R2,500 or more!
  2. Standard Shipping 0 to 5kg – R99.00
  3. Shipping Shipping 5.1 to 10kg – R118.00
  4. Standard Shipping 10.1 to 15kg – R140.00
  5. Standard Shipping 15.1 to 20kg – R180.00
  6. Standard Shipping 20.1 to 40kg – R220.00
  7. Standard Shipping 40.1 to 80kg – R250.00
  8. Standard Shipping 80.1kg 100 – R400.00
  9. Standard Shipping 100.1kg to 130kg – R517.50
  10. Standard Shipping 130.1kg to 160kg – R667.00
  11. Standard Shipping 160.1kg to 190kg – R747.50
  12. Standard Shipping 190.1kg to 230kg – R874.00

Shipping rates are provided at checkout.

Our delivery service only runs from Monday to Friday. Saturday morning deliveries can be done by special arrangement only and at an additional charge. Please contact us to arrange. We reserve the right to re-quote the delivery fee should this become too expensive.

At AMT Composites we want you to be 100% happy with any purchase you make from us.

Changing your Mind / Right to Cancel

If you change your mind for any reason, goods can be returned to us for a full refund if notified to us within 7 days of delivery; you have a further 7 days to dispatch the goods for their return to us. Goods returned after 7 days will incur a 15% restocking fee of the items being returned.

NO GOODS manufactured or sold by Advanced Materials Technology Pty Ltd will be accepted for a credit if returned after one (1) calendar month of original invoice date.

To return goods that are not faulty (i.e. because you changed your mind) they must be unused and, in the condition, they were delivered to you in. This does mean that, unless found faulty, we are unable to accept returns for:

  • Opened containers of resin, hardener, silicone or chemical release agent, unless found to be faulty or defective.
  • Unrolled and improperly re-rolled fabrics, unless found to be faulty or defective.
  • Any product that you have subsequently cut, shaped, broken or modified, unless found to be faulty or defective.

Refund of Delivery Charges (Cancelled Orders)

If you return an order in its entirety, then your outbound delivery charges will also be refunded (for orders within the South Africa’s Local Area’s.

If you return only part of an order, then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service). Due to the way that shipping costs are incremented, this will often result in no delivery charge refund being due.

Faulty or Defective Goods

Any goods found to be faulty or defective and notified to us within 7 days of delivery can be returned to us for a full refund.

Refund of Delivery Charges (Faulty/Defective Goods)

If you are returning faulty or defective goods, then your outbound and return delivery costs will be refunded in full (for orders from within South Africa’s Local Area’s.)

In the event that you are returning faulty or defective goods which were ordered as part of a larger order then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service).

Please check the box to acknowledge our return’s policy, by doing so you agree to our Return’s Policy of AMT Composites stated above.

If a product is backordered and ordered with other products, your order will only ship once the backordered item is back in stock.


Get true expertise & assistance. Speak with one of our professional consultants in Johannesburg, Cape Town or Durban. Call 011 392 4232.

Features and Benefits

  • Versatile – Bonds a wide variety of both polyether and polyester compounds, including RIM, eliminating the need to stock several adhesives in your plant.
  • Tolerant to Process –  Accommodates a wide range of processing conditions, including prebaking.
  • Durable Bonded – assemblies are particularly resistant to exposure to harsh environments, thus giving longer service life products.
  • One Coat Only – a single dip or brush coat is required, thus minimising application costs.
  • Non-Settling Product – does not require agitation saving application time and eliminating possible application errors.
  • Fast Drying Allows – rapid turnaround times in the plant and minimises the need to keep large inventories of coated parts.
Composition A mixture of polymers, curatives and dyes dissolved in an organic solvent system
Colour Blue
Viscosity Brookfield LVT No. 2 Spindle @ 30 rpm @ 25ºC 100 – 300 cps
Non-volatile Content
Volume **
( % )
21 24
± 16,5
Specific Gravity 0,90 g/cm³
Flash point (Seta) ** 5ºC
Coverage ** Approximately 9 m² / litre at 25 μm dry film thickness
Diluents Oxitol Acetate or Oxitol Acetate / MEK
Solvents Oxitol Acetate, MEK, Xylene
Shelf life stored @ 25ºC One year from date of delivery in unopened container

*Typical – not for specification
**Not Routinely tested – Theoretical value

Bonding with Primer 760

Metal Surface Preparation

Proper penetration on of the surfaces to be bonded is one of the most important factors influencing adhesion in any bonding process. For op mum performance the substrate must be prepared in such a way as to provide a receptive surface for the adhesive.
The importance of meticulous preparation on cannot be over­emphasised. Metal surface preparation on may be broadly divided into two classes; mechanical methods and chemical methods.

Mechanical Method

Mechanical methods include such operations as blasting with sand, grit and metal oxides; abrading with a wire brush, steel wool or backed abrasives; and machining or scoring with cutting tools. Chemical solvent cleaning is sometimes necessary with methods that are classified as mechanical.

Blasting with grid (steel or aluminium oxide) combined with solvent cleaning is a widely used and generally excellent method of preparing steel surfaces. It is especially useful for metals covered with rust, scale, oxide layers and similar corrosion compounds, or those badly soiled or contaminated with materials such as processing oils or corrosion protection greases. A typical sequence of steps is vapour degrease, grit, vapour degrease

Initial degreasing with Trichloroethylene (TCE) or Perchloroethylene (PERC) is intended to remove contaminants such as greases and oils. Such ac on may not be effective in removing soaps, and certainly not scale or corrosion. The primary purpose of this first cleaning is to remove materials, which would contaminate the media in the subsequent blasting opera on.

Blasting consists of impinging abrasive particles against the surface of the metal with a stream of air. Grit is preferred over shot because grit produces a rough open surface, while shot sometimes tend to peen the surface occluding contaminants. The most commonly used grid size is 30 ­ 40 mesh.

The second degreasing step is a safety factor designed to remove abrasive dust or any contaminants, which may have been present in the blasting medium. Grinding or abrading with wire brushes, steel wool, or abrasive cloth produces satisfactory bonding surfaces. Freshly milled or machine surfaces are also excellent for bonding, providing cu ng oils are properly removed. The same practices of degreasing should be followed as was discussed under grit blasting.

Chemical Method

Chemical methods utilise inorganic reagents in two types of chemical reaction:

  • ­Conversion of the metal surface from an essentially free metallic or metal oxide state into metallic compounds.­
  • Elimination of soils and surface contaminants by chemical ac on such as decomposition.
  • A wide variety of chemical treatments are available to meet the needs of nearly every bonding application.
  • Some of the types available include phosphatisation, alkaline treatment, acid rinse, chromate and phosphate conversion coatings, chemical etching and plating.

Selecting a Method

The choice of mechanical or chemical methods is dictated by several considerations:

  • Economics: Chemical methods are generally less expensive than mechanical methods.
  • Versatility: The same mechanical method may be applicable to many metal surfaces whereas chemical treatments tend to be substrate specific.
  • Adaptability: Exis ng facilities may favour either mechanical or chemical processing.
  • Performance requirements: Products vary widely in the degree of adhesion required, processing and surface preparation methods must be adapted accordingly.
  • Environmental resistance: Chemical conversion often imparts enhanced resistance to harsh environments.
  • Regulatory considerations: In some areas, waste disposal considerations may preclude the use of chemical treatment.

Protection Of The Prepared Surface

The freshly prepared surface must be protected against contamination and corrosion. Care must be exercised to avoid handling freshly prepared metal parts. The best way to accomplish this is by applying the adhesive as soon after surface preparation as is practical. PRIMER 760 provides a tough barrier to protect from contamination by dirt, oils or moisture to preserve the ability for bonding with applied RIM or castable urethane.
For more detailed discussion of substrate preparation, please contact Lord bulletin number DS10­7101.

Application of Primer 760

PRIMER 760 may be easily applied by brush, dip or spray ­using application equipment. No agitation of the adhesive is required prior to application. Optimum applied dry film thickness is 18 ­ 25 microns (µm).


PRIMER 760 can be applied by brush as received or preferably slightly thinned with Oxitol Acetate and/or MEK prior to use. Use of a 4 : 1 ratio of adhesive to solvent is usually satisfactory.


PRIMER 760 can be used as received for dip applications. As supplied, dipping will result in a dry film thickness of 18 ­ 25 microns on a vertical surface.


PRIMER 760 should be diluted with an Oxitol Acetate / MEK (1 : 1) mixture until a viscosity of 20 ­- 22 seconds with a Zahn No. 2 cup is attained. This will correspond to a dilution ratio of 1 part PRIMER 760 to 1 part Oxitol Acetate / MEK thinner by volume.


Parts coated with PRIMER 760 should be air dried for 30 ­- 60 minutes. Forced drying can be accomplished at temperatures up to 120ºC.
NOTE: To prevent bubbling of the film, Primer 760 should not be applied to substrates hotter than 80ºC.

Prebaking Of The Coated Part

After PRIMER 760 has been applied, large metal parts, which act as heat sinks, are preheated prior to casting. The adhesive is pre­cured on the part and the overall environmental resistance of the bonded part is actually enhanced by this pre­cure. PRIMER 760 shows a wide tolerance for pre­bake, accepting pre­bake periods as long as 16 hours at 120ºC without adverse effect on adhesion.

Safety & Handling

  • Do not use near open flames, sparks or sources of heat
  • Do not smoke during application
  • Avoid contact with skin and eyes
  • Wear protective gloves and goggles
  • Wash thoroughly after use and before eating and smoking
  • Avoid breathing of vapours and mists
  • Use in a well ventilated atmosphere
  • Wear a breathing mask
  • Harmful or fatal if swallowed. If swallowed, do not induce vomiting, but seek medical advice immediately
  • Do not return unused product to the original container
    Keep container closed when not in use

Refer to Material Safety Data Sheet (MSDS) on PRIMER 760 for full safety information on handling and disposal.

Weight 0.1 kg


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