Chemetall NAFTOSEAL-MC238A-2 (250-ML-KIT)
FILLET and OVERCOAT SEALANT (250-ML-KIT)
AERO P/N: 116356
Hazardous Material
Total Available Stock: 0
UK
USA
Available On Request
Available On Request
Minimum Order Quantity: 12
Estimated Lead Time: 70 days
Estimated Lead Time: 70 days
£84.10 excl VAT
Naftoseal MC-238 A-2 is a Class A polysulfide sealant kit (~0.25 L / ~8.45 fl oz) that provides fuel-resistant, flexible sealing for fuel tanks and fuselage joints in OEM manufacturing, MRO, and continuous panel applications.
Product Features
OEM
-
Brand
Chemetall
OEM Part No.
-
Colour
-
Shelf Life in Months
6
Shelf Life in Days
180
UN No
UN1133
Class
CL3
PG
PGIII
ECCN
EAR99
Country of Origin
Germany
Commodity Code
32149000
Please login to access datasheets.
Information
Additional Product Information
Overview
NAFTOSEAL MC238A-2 is a two-component, manganese dioxide-cured polysulfide sealant designed for fuel-wet aircraft structures. It is used in aviation manufacturing and MRO environments to create durable, elastic seals that resist fuel, hydraulic fluids, and environmental aging. Maintenance teams rely on it for its predictable cure behavior, strong adhesion, and long-term sealing reliability under thermal cycling and structural movement.
Key Technical Specs for Chemetall NAFTOSEAL-MC238A-2
- Type: Two-part polysulfide sealant
- Size/Volume: 250 mL (8.45 fl oz)
- Color: Typically gray
- Viscosity/Consistency: Thixotropic paste
- Cure/Working Time: Approx. 2 hours working time (Class A-2)
- Tensile/Peel Strength: Structural fuel tank sealing grade
- Shore Hardness: Elastic rubber after cure
- Typical Uses: Fuel tanks, fuselage seams, wet wing structures
- Shelf Life: Typically 9 months refrigerated
Approvals & Specifications
- AIMS-04-05-001
- AIMS-04-05-002
- NTA-65361
- MDL-6057
Typical Aircraft MRO / AOG Applications
- Integral fuel tank sealing
- Fuselage lap joints and seams
- Fuel access panels and covers
- Structural wet area repairs
Compatibility & Safety Notes
- Compatible with aluminium, titanium, stainless steel, and composites
- Use gloves and eye protection during mixing and application
- Adequate ventilation recommended during cure
Packaging & Procurement
- 250 mL two-component kit
- Reduced kit changes for larger sealing tasks
- Compatible with standard extrusion tools
- Cold storage extends shelf life
Why Chemetall NAFTOSEAL-MC238A-2 is Chosen for AOG / MRO
- Reliable cure and predictable working time
- Excellent fuel and chemical resistance
- Suitable for production and repair environments
- Efficient coverage for medium-scale tasks
Practical Suggestions for Your Team (AOG Mindset)
- Store refrigerated to maximize shelf life
- Pre-stage kits before fuel tank entry
- Ensure uniform mixing prior to application
Manufacture / Aviation Spec Codes
- Manufacturer: Chemetall
- Product ID: NAFTOSEAL MC238A-2
- AIMS / NTA / MDL qualified
Alternative Names & Descriptions
- Naftoseal MC238 A-2
- MC238A Class A-2 Sealant
- Fuel Tank Polysulfide Sealant
- Chemetall MC238A Wet Wing Sealant
Restrictions
Restrictions
Restricted
Hazardous
Yes
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no
Recommended Alternatives
Shipping Information
- Orders over £100 online are eligible for FREE UK Mainland delivery.
- Collection for orders is available for all customers. At Checkout, please select 'Ex-Works/Collection'.
- European Delivery is available for selected countries. Shipping costs will be calculated according to the weight of the products.
- Refrigerated shipping required for shipments going by sea or exceeding 7 days transit time.
- For additional information, please see our shipping page.