Stopaq
Polyisobutene-based self‑healing corrosion protection
Corrosion attacks steel pipe wherever oxygen and moisture reach the surface: at joints, bends, valves, flanges and under insulation. Stopaq solves that without heavy surface preparation. ST2 cleaning is enough, and rust does not have to be ground off as long as the surface is clean of dirt. The cold‑applied visco‑elastic polyisobutene (PIB) compound flows into surface irregularities and shuts out oxygen and electrolyte, so the oxidation process stops. The compound is organic and never dries or cures, so it self‑heals small mechanical damage. No primer, no blasting, and compatible with cathodic protection.
Stopaq, products
Cold‑applied visco‑elastic PIB wrap for the external corrosion protection of steel and ductile‑iron pipes, field joints and fittings, buried, submerged or above ground. It bonds without primer (wire brushing to St 2 is enough), self‑heals small dents and cracks, and does not interfere with cathodic protection. A mechanical overwrap, such as Stopaq Outerwrap, goes on top.
- Operating temperature
- −45 °C … +70 °C (thermal resistance +90 °C)
- Standards
- ISO 21809‑3 (type 13), EN 12068 (KIWA), NSF/ANSI 61
- Application
- Cold, by hand, no primer, no blasting
Polyisobutene‑based filler pumped hot into the annulus between a casing pipe and the carrier pipe, for example at road, rail and waterway crossings. As it cools it sets into a flexible mass that displaces water and oxygen, so corrosion cannot start. Compatible with cathodic protection.
- Operating temperature
- −20 °C … +35 °C
- Standard
- ISO 16440; salt‑spray ASTM B117 720 h
- Application
- Heated and pumped into the annulus
Polyethylene‑based mechanical protection tape with a butyl adhesive. Applied over the Stopaq wrap to protect it from impact and indentation. It resists acids and alkalis, installs cold and needs no curing time.
- Operating temperature
- −30 °C … +70 °C
- Standard
- ISO 21809‑3 (type 13A)
- Thickness
- 0.5 mm
Where this is used
- Buried pipelines
- Offshore field joints and splash zones
- Refineries and process piping
- Municipal water networks
- Corrosion under insulation (CUI)
- Tanks and steel structures
- Preventive protection before corrosion starts
Also for individuals and maintenance teams.
Stopaq doesn't have to be ordered in industrial volumes. Smaller batches, single rolls, and maintenance-sized sets ship directly from the Tuusula warehouse. Ask about pick-up or delivery options.
Stopaq's visco-elastic matrix keeps re-sealing the joint for the pipe's whole service life.
Stopaq, common questions
What is Stopaq used for?
What temperature does Stopaq withstand?
Does Stopaq need blasting or a primer?
What does self‑healing protection mean?
Is Stopaq compatible with cathodic protection?
Is Stopaq suitable for drinking water pipes?
Can I buy a smaller quantity of Stopaq for maintenance?
Need a Stopaq quote?
Briefly describe project and quantities; we'll reply on availability and terms.