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Chemetall NAFTOSEAL MC650B 1 (2.5 oz / 55 ML / TK55 KIT)

SEALANT (TK55) (55-ML-KIT)
AERO P/N: 116370

SVHC Material. Approval required at Checkout for UK & EU Deliveries.

Chemetall NAFTOSEAL MC650B 1 (2.5 oz / 55 ML / TK55 KIT) Chemetall NAFTOSEAL MC650B 1 (2.5 oz / 55 ML / TK55 KIT)
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Minimum Order Quantity: 24
$73.37 excl VAT
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Naftoseal MC650 B1 is a two-component, manganese dioxide-cured polysulfide aircraft sealant in a ~55 mL Techkit, used for sealing fuel tank and fuselage joints with chemical resistance, elasticity, and low shrinkage.
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Product Features
OEM
-
OEM Part No.
-
Colour
-
Shelf Life in Months
6
Shelf Life in Days
180
UN No
UN1133+UN3082
Class
CL3+9
PG
PGIII
ECCN
EAR99
Country of Origin
Germany
Commodity Code
32149000
Product Type
Sealants

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Additional Product Information

Overview

NAFTOSEAL MC650B-1 is a balanced-performance polysulfide sealant offering moderate working life, strong adhesion, and excellent resistance to aviation fuels and environmental exposure. It is used in both OEM and MRO environments where consistent curing behavior and durability are required.

Key Technical Specs for Chemetall NAFTOSEAL MC650B-1

  • Type: Two-part polysulfide sealant
  • Size/Volume: 55 mL (1.86 fl oz)
  • Color: Typically gray
  • Viscosity/Consistency: Thixotropic paste
  • Cure/Working Time: Moderate working life (Class B-1)
  • Tensile/Peel Strength: Structural sealing grade
  • Shore Hardness: Flexible elastomer
  • Service Temperature: Suitable for fuel and structural environments
  • Typical Uses: Structural sealing, fuel system applications
  • Shelf Life: Refrigerated storage recommended

Approvals & Specifications

  • AIMS qualified (variant dependent)

Typical Aircraft MRO / AOG Applications

  • General-purpose structural sealing
  • Fuel system maintenance
  • OEM assembly tasks

Compatibility & Safety Notes

  • Compatible with common aircraft substrates
  • Observe standard PPE requirements

Packaging & Procurement

  • 55 mL kit ensures correct mix ratio
  • Minimises application errors

Why Chemetall NAFTOSEAL MC650B-1 is Chosen for AOG / MRO

  • Balanced working time and performance
  • Reliable fuel resistance
  • Consistent curing behavior

Practical Suggestions for Your Team (AOG Mindset)

  • Use as a versatile alternative to MC630
  • Maintain stock for mixed-use scenarios

Manufacture / Aviation Spec Codes

  • Manufacturer: Chemetall
  • Product ID: NAFTOSEAL MC650B-1

Alternative Names & Descriptions

  • Naftoseal MC650B
  • General Purpose Polysulfide Sealant
  • Fuel-Resistant Structural Sealant
Restrictions
Restricted
Hazardous
Yes
Dry Ice
No
Precursor Licence
Export Licence
FEDEX Restriction
Supplier Disruption
no

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  • 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.

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