AkzoNobel S66/22R (5-Ltr-Can)

Additional Product Information

AkzoNobel S66/22R is the trusted hardener used by MRO teams and aircraft engineers across the aviation industry, from the most advanced military aircraft to the passenger airlines responsible for millions of lives each year. Chosen because it delivers proven durability, chemical resistance and compliance with OEM and airline specifications. It ensures coatings perform flawlessly under the harshest operating conditions. This means whether you’re responding to an AOG, performing scheduled maintenance or supporting frontline defence fleets, you can rely on the AkzoNobel S66/22R to deliver consistent, certified results. That’s why engineers worldwide keep this hardener at the heart of their maintenance operations.

Key Technical Specs for AkzoNobel S66/22R

• Product role: S66/22R is the hardener / curing component for AkzoNobel Aerodur 3-component polyurethane finishes. Use only with the matching Aerodur basecoat and the thinners specified in the TDS.
• Mix ratio (typical for Aerodur Finish SGL Aluminium): Base : Hardener : Thinner = 100 : 100 : 50–75. Induction 15–30 minutes. Pot life at 23 °C (73 °F) about 6 hours. Dry film thickness (DFT) 30–40 µm (1.2–1.6 mil). Theoretical coverage ≈ 24 m² per litre at 30 µm (≈ 963 ft² per US gal at 1.2 mil).
• Application / equipment: recommended spray or HVLP nozzle sizes and parameters are specified in the TDS. Typical ambient application range 15–35 °C (59–95 °F), 35–75% RH.

Approvals & Specifications for AkzoNobel S66/22R

• AkzoNobel Qualified Product List / TDS lists: Aerodur Finish SGL Aluminium with Hardener S66/22R and references qualified product lists.
• Safran / landing-gear reference: the TDS/QPL references SafranLandingSystems PCS-2500 in its product/qualified listings.
• Third-party distribution / catalogue listings: product is carried on Boeing Distribution and catalogues such as SkyGeek, GracoRoberts & Hisco show AIMS and other aircraft-industry spec references.

Typical Aircraft MRO / AOG Applications for AkzoNobel S66/22R

• Common uses: final topcoat hardener for exterior and interior polyurethane finishes on airframes, nacelles and serviceable panels where chemical and hydraulic-fluid resistance and good gloss and appearance are required. Used across commercial, business and military fleets when paired with Aerodur topcoats.
• Why it’s AOG-critical: the 5-litre can size and shelf life make it practical for fast turnaround fixes, spot repairs and AOG touch-ups where you must match OEM paint systems quickly and maintain traceability.

Compatibility & Safety Notes for AkzoNobel S66/22R

• Compatibility: Use only with the AkzoNobel Aerodur base. Mixing with other manufacturers’ activators risks improper cure, loss of gloss, adhesion failures or out-of-spec film properties.
• Hazards and handling: flammable liquid (UN1263, Class 3, PG III); skin sensitiser and respiratory irritant. Spray operations require spray-booth ventilation and appropriate respiratory protection, chemical-resistant gloves, eye protection and anti-static handling. Avoid open flames. Bond/earth drums when transferring.
• Why practical for AOG: compact 5 L pack balances economy and usability on emergency repairs. Clear shelf-life and batch labelling from distributors lets ground crew/MRO maintain inventory rotation and traceability for airworthiness documentation.

Packaging & Procurement for AkzoNobel S66/22R (matched to the Aerospheres page and common market packs)

• Pack size and stocking info: sold as 5-litre (5 L / 1.32 US gal) can. Product data lists: AERO P/N 100659, OEM P/N 102404, shelf life 720 days, UN1263, Class CL3, Packing Group PG III, ECCN EAR99, Commodity Code 32100010.
• Purchasing note: for aircraft workpacks / AMM compliance request a Certificate of Conformance (CoC).

Why AkzoNobel S66/22R is Chosen for AOG / MRO

• System match & OEM acceptance: it is the specified curing component for Aerodur finishes. Using the specified system reduces rework, adhesion failures and OEM non-conformance during field repairs.
• Practicality: 5-L can is small enough for AOG bagging and large enough to perform multiple spot repairs or a full panel refinish without excessive leftover waste. Shelf life, batch traceability and distributor AOG services reduce downtime risk.

Practical Suggestions for Your Team (AOG mindset) for AkzoNobel S66/22R

• Keep at least one sealed 5 L can of S66/22R per shift for AOG/fast-turn. Verify expiry on each can before use.
• Store 5–35 °C (41–95 °F) in original sealed containers. Keep away from ignition sources and segregate from incompatible materials.
• Pre-approve paperwork: obtain CoC and batch number at purchase. Attach copies to the workpack for traceability in the aircraft records. Request the TDS and SDS with every lot.
• AOG kit idea: include 5 L S66/22R, matching Aerodur base in appropriate smaller transfer tins, matching thinner, wipes, PPE and a printed TDS/SDS in a weatherproof folder. This reduces time hunting for compatible components during an AOG.

Manufacture / Aviation Spec Codes for AkzoNobel S66/22R

• AIMS references: AIMS 04-04-002 / 3 / 7 / 12 / 22 / 23 / 40 / 41.
• AkzoNobel QPL / TDS references: Aerodur Finish SGL Aluminium with Hardener S66/22R and SafranLandingSystems PCS-2500 are cited in AkzoNobel documentation / QPL. For any aircraft OEM specific spec number (Boeing, Airbus, Lockheed) you should request certified spec documentation or CoC from the supplier.

Alternative Names & Descriptions for AkzoNobel S66/22R

• S 66/22 R
• S66-22R Hardener
• AkzoNobel S66/22R (5 Ltr Can)
• Aerodur Hardener S66/22R
• HARDENERS66-22R:H0951
• HARDENER S66/22R
• PAINT HARDENER S66/22R 5