Superfast Steel Epoxy Putty is a metal repair putty for sealing holes and restoring surface profile to leaking metal pipes
Superfast Steel Epoxy Putty is a metal repair putty for sealing holes and restoring surface profile to leaking metal pipes

Superfast Steel Epoxy Putty Stick

Superfast Steel is a fast-working epoxy putty in a 114g stick format used to seal holes, cracks and leaking joints in metal pipework and restore pipeline integrity by repairing small areas of surface damage.

It is steel-filled and specially formulated for the repair of steel, stainless steel, iron and other ferrous metal in industrial and larger domestic applications where water pressure can be turned off.

Superfast Steel has WRAS approval, meaning it is certified to British standards as safe to use on pipes carrying drinking water. Within an hour of application, systems repaired using Superfast Steel can be put back into use.

It is resistant to water, chemicals and temperature extremes and it does not rust. It contains no solvents or VOC’s, is non-flammable and releases no noxious fumes. It will not shrink or pull away and the unused portion of Steel Stick stays fresh for future use when saved in its original package.

To reinforce repairs made with Superfast Steel, Sylmasta recommend overwrapping the Epoxy Putty with a SylWrap HD Pipe Repair Bandage. The Bandage offers a rock hard, impact resistant layer of protection.

SylWrap HD can either be purchased separately, or alongside Superfast Steel as part of the Standard Pipe Repair Kit. Both Superfast Steel and SylWrap HD are also included in the Pipe Repair Contractor Case, containing enough pipe repair products to make up to six repairs.

For larger leak sealing and damage repair applications requiring a slower curing putty for more careful application, please see Sylmasta AB Original Epoxy Putty. AB Original is available in bulk quantities and has a two hour work time for more complicated repairs.

Superfast Steel Epoxy Putty is resistant to 150°C and pressure resistant to 30 bar. For extreme temperature repairs, please see Superfast Titanium Epoxy Putty Stick which offers resistance to 280°C.


How to seal a leaking metal pipe with Superfast Steel Epoxy Putty Stick

Superfast Steel Stick contains pre-measured portions of activator and base, meaning that no measuring or mixing is required.

To use Superfast Steel, simply cut off the required amount of Epoxy Putty and knead it by hand. As it is kneaded, the two contrasting colours will blend into one to indicate successful mixing.

Whilst soft, Superfast Steel Epoxy Putty is pushed into holes and cracks in metal pipework. For damage repair and surface restoration, it is applied over areas of pitting and damage caused by corrosion.

Superfast Steel has a work life of approximately 3 minutes. Within 5-10 minutes, the Epoxy Putty will begin to harden and form a cohesive bond. After one hour, the pipe in question can be put back into service.

Once cured, Superfast Steel can be tapped, drilled, screwed, sawed, machined, ground, filed, or painted to create a smooth and seamless finish uniform with the pipe undergoing repair.


  • Large domestic repairs to pipes made of steel, stainless steel, iron and other ferrous metals
  • Industrial repairs to metal pipework including wastewater treatment works, quarry wash plants, dry risers, petrochemical plants, nuclear power plants, oil rigs, farms, hotels, and breweries
  • Surface profile restoration to pipes damaged by corrosion


  • Easy to use – cut off amount of putty required, knead by hand, apply
  • Repairs in 5-10 minutes. Systems can be turned back on after one hour
  • Does not rust. Unused putty can be kept for a later repair
  • WRAS approved so safe to use with drinking water

Technical Data

Hardness, Shore D:
90 (full cure, 24 hours).

Lap Shear Tensile Strength:
6.3 MPa (on steel).

Compressive Strength:
90 MPa.

Density (gm/cm3):


Non-Volatile Content:

Electrical Resistance:
30,000 megohms.

Dielectric Strength:
300 (volts/mil).

Upper Temperature Limit:
120°C continuous.
150°C intermittent.

Chemical Resistance:
Resistant to hydrocarbons, ketones, alcohols, esters, halocarbons, aqueous salt solutions and dilute acids and bases.

Full TDS Downloads

Case Studies

Superfast Steel Epoxy Putty Case Studies

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Related Leak Repair Kits

The SylWrap Standard Pipe Repair Kit fixes any leaking pipe where pressure can be turned off

SylWrap Standard Pipe Repair Kit

The Standard Pipe Repair Kit is used to make a WRAS approved, permanent repair to burst and leaking pipes when pressure can be turned off.

Number of Repairs: One
Pressure Resistance: Up to 30 bar
Temperature Resistance: Up to 120ºC
Live Leaks: No

A SylWrap Universal Pipe Repair Kit enables a user to fix a live leak on a pipe within 30 minutes without any formal training

SylWrap Universal Pipe Repair Kit

The Universal Pipe Repair Kit contains all the products needed to make a WRAS approved, permanent repair to burst and leaking pipes when pressure cannot be turned off.

Number of Repairs: One
Pressure Resistance: Up to 30 bar
Temperature Resistance: Up to 120ºC
Live Leaks: Yes

SylWrap Pipe Repair Contractor Case

Designed for regular users, the Case is easily stored on-site or on-the-van for immediate emergency use. It contains enough products to make up to six WRAS approved permanent repairs.

Number of Repairs: Multiple
Pressure Resistance: Up to 30 bar
Temperature Resistance: Up to 120ºC
Live Leaks: Yes