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PERMABOND MT3821

PERMABOND MT3821

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2:1 modified 2K epoxy resin adhesive for flexible connections.

2:1 modified 2-component epoxy adhesive (thixotropic, black) for flexible bonds — pliable, excellent adhesion to nylon, ABS, polycarbonate

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Industrial sealant epoxy resin adhesive polyamide

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

Internal reference: 49-3821.KT

HS code: 3506.9190000

Internal reference: 49-3821.KT
HS code: 3506.9190000

PERMABOND MT3821
PERMABOND MT3821
Permabond · SKU 49-3821.KT

Permabond MT3821 is a 2:1 modified 2K epoxy adhesive (thixotropic, black) for flexible bonding — supple, excellent adhesion to nylon, ABS, polycarbonate.

Permabond two-component epoxy adhesives — room temperature curing, with good gap filling, excellent multi-substrate adhesion and potting suitability. MT3821 is tailored to specific applications — the most important properties and areas of application are listed below.

Flexible + thixotropic black

Permabond MT3821 is a flexible variant of MT382 — 2:1 mixing ratio with a smooth, thixotropic consistency in black. Excellent adhesion to engineering plastics, complete curing at room temperature.

MT3821 in figures
2:1
Mixed behavior.
Black
thixotropic
Flexible
supple
Multi-plastic
adhesion

What distinguishes MT3821

Smooth and flexible
Compensation for tolerance between substrates with different thermal expansion.
Thixotropic, black
Stable, ideal for vertical applications with a discreet appearance.
Engineering plastic adhesion
Nylon, ABS, polycarbonate.
2:1 mixing ratio
Easily dosable with a static mixer.
Complete room temperature curing
No heat treatment required.

What is the MT3821 used for?

Flexible engineering plastic adhesive
Where standard epoxides are too rigid.
Multi-material with thermal expansion
Tolerance compensation.
Vertical bonding
Thixotropic consistency.
Black look desired
Discreet adhesive seams in dark components.
Structural industrial bonding
Vibration-stressed connections.
Data sheets & safety data sheet
TDS and SDS in multiple languages ​​— watch or download directly.
To the documents →

processing

1
clean substrate
Degrease and dry bonding surfaces with Permabond Cleaner A — if necessary, sand for mechanical clamping.
2
Primer (if needed)
Permabond 2-K Primer Kit for critical substrates.
3
Mix A and B
Mix at the specified ratio (see TDS, typically 1:1, 2:1 or 10:1). Homogenize thoroughly — no streaks.
4
Apply
Apply to an adhesive surface within the pot life. For dual cartridges, use directly with a static mixer.
5
assembling components
Apply pressure and join, fix position until initial cross-linking occurs.
6
Room temperature curing
24 hours at 23 °C for handling strength, 48 hours for full cross-linking. Can be accelerated with heat.

Recommended accessories

Permabond 2-K Primer Kit
Universal primer kit with wettability indicator — for metal, glass, plastic, and composite materials.
View product →
Permabond Cleaner A Aerosol
Universal industrial cleaner as a spray — standard preparation before Permabond bonding.
View product →
Permabond MT 3836
2K hybrid silane polymer — UL 94 V-0 fire protection + thermally conductive adhesive.
View product →

MT3821 in comparison

Direct comparison with related Permabond products in our range.

MT3821
Current product		 MT382 →Double/Bubble E01 →MT 3836 →
Chemical basis2K modified epoxy (flexible)2K modified epoxy2K epoxy2K Hybrid Silane Polymer
viscositythixotropicself-levelingpasteuspasty
GradeIndustrialIndustrialIndustrialIndustrial / UL 94 V-0
Colorblacksee TDSsee TDSsee TDS
SetTimemin.min.a few minutesmin.
Full Cure24 h RT24 h RT24 h RT24–48 h RT
Main applicationFlexible adhesive, blackEngineering plastics + pottingMobile repairFire protection + heat conductivity
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Industrial sealant epoxy resin adhesive polyamide

Technical data for PERMABOND MT3821

Product information
brand Permabond
Container 50 ml, 400 ml

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

Documents and datasheets

Click on a document for a preview or the download icon for a direct download.

Technical Data Sheets (TDS) 3
Permabond MT3821 - Technical Data Sheet DE.pdf
332 KB
Permabond MT3821 - Technical Data Sheet EN.pdf
316 KB
Permabond MT3821 - Fiche Technique FR.pdf
289 KB
Safety Data Sheets (SDS) 3
Permabond MT3821 - Safety Data Sheet DE.pdf
363 KB
Permabond MT3821 - Safety Data Sheet EN.pdf
340 KB
Permabond MT3821 - Fiche de Sécurité FR.pdf
345 KB

Frequently Asked Questions about MT3821

Practical application and design questions — answered by SILITECH.

Permabond MT3821: 2:1 modified 2-component epoxy adhesive (thixotropic, black) for flexible bonding — pliable, excellent adhesion to nylon, ABS, and polycarbonate. Main applications: Flexible engineering plastic bonding, multi-material bonding with thermal expansion, vertical bonding.

Selection criteria: 1) Substrate (engineering plastics such as nylon/ABS/PC require modified epoxies like MT382), 2) Gap width (large gaps: thixotropic variants), 3) Flexibility (tolerance compensation: flexible variants like MT3821), 4) Mixing ratio (1:1 simple, 2:1 or 10:1 for defined properties), 5) Pot life (short for high throughput, long for careful processing). SILITECH provides consultation for selection.

Store in the unopened original container in a dry, cool place — Permabond adhesives typically between +5 and +25 °C, see TDS for exact values. Consult the Safety Data Sheet (SDS) before use. Observe the expiry date on the packaging. Store cyanoacrylates in a cool place (ideally refrigerated) for maximum shelf life.

The comparison table above lists related Permabond products with different properties—viscosity, mixing ratio, special certification. If you are unsure which product is best, we would be happy to advise you—contact SILITECH with your specific application (substrate pairing, load, curing conditions).

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Product specifications

Container 50 ml or 400 ml
brand Permabond
Keywords
Keywords
Industrial sealant epoxy resin adhesive polyamide

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: