Chemetall NAFTOSEAL MC-238B-2 (55-ML-KIT)
FUEL TANK SEALANT (55-ML-KIT)
AERO P/N: 116350
Total Available Stock: 0
UK
USA
Available On Request
Available On Request
Minimum Order Quantity: 24
Estimated Lead Time: 70 days
Estimated Lead Time: 70 days
£55.58 excl VAT
Naftoseal MC-238 B2 is a two-component, manganese dioxide-cured polysulfide sealant (~0.055 L / ~1.86 fl oz) providing high-performance, Class B (~2h) sealing for fuel tanks and fuselage assemblies, resisting fuel permeation and joint stress, ideal for spot repairs, patching small structural joints, and MRO maintenance.
Product Features
OEM
-
Brand
Chemetall
OEM Part No.
-
Colour
-
Shelf Life in Months
6
Shelf Life in Days
180
UN No
-
Class
-
PG
-
ECCN
EAR99
Country of Origin
Germany
Commodity Code
32149000
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Information
Additional Product Information
Overview
Chemetall Naftoseal MC-238B-2 is a high-grade liquid polysulfide sealant used in aircraft manufacture and MRO. It cures to a resilient, flexible seal with strong adhesion to aluminium, titanium, steel, and coated composites. Aviation teams rely on it for fuel-wet and structurally stressed areas where durability, chemical resistance, and predictable working time are critical.
Key Technical Specs for MC-238B-2
- Type: Polysulfide sealant
- Size/Volume: 55 mL / 1.86 fl oz
- Color: Grey
- Viscosity/Consistency: Thixotropic liquid / paste
- Cure/Working Time: 2 hours at 23°C / 73°F
- Tensile/Peel Strength: High adhesion, flexible after cure
- Shore Hardness: Shore A ~35 (after ~48 hours)
- Service Temp: -55°C to +130°C / -67°F to +266°F
- Typical Uses: Fuel tank sealing, structural joints
- Shelf Life: Refer to manufacturer documentation
Approvals & Specifications
- AIMS 04-05-001
- AIMS 04-05-002
- DAN 1186
Typical Aircraft MRO / AOG Applications
- Integral fuel tank sealing
- Fuselage and structural joint sealing
- Fuel-wet repair zones during AOG events
Compatibility & Safety Notes
- Compatible with aluminium, titanium, steel, composites
- PPE required: gloves and eye protection
- Avoid skin contact during mixing and application
Packaging & Procurement
- 55 mL two-part kit
- Suitable for small repairs and confined areas
- Easy to transport for AOG support
Why MC-238B-2 is Chosen for AOG / MRO
- Predictable 2-hour working life
- Excellent fuel and chemical resistance
- Reliable cure under field conditions
Practical Suggestions for Your Team (AOG Mindset)
- Stock small kits for rapid-response repairs
- Train staff on correct mix and tooling techniques
- Use gentle heat to accelerate cure when permitted
Manufacture / Aviation Spec Codes
- Manufacturer: Chemetall
- Product ID: MC-238B-2
- Specification Codes: AIMS 04-05-001, AIMS 04-05-002, DAN 1186
Alternative Names & Descriptions
- Naftoseal MC238B-2
- MC-238B-2 Polysulfide Sealant
- Chemetall MC238 B2 Sealant
- Aerospace Fuel Tank Sealant MC238B-2
Restrictions
Restrictions
Restricted
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no
Recommended Alternatives
Shipping Information
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