Loctite 406 — the instant cyanoacrylate that bonds plastics in seconds.
One-part ethyl cyanoacrylate instant adhesive for plastics, rubbers, and metals. Transparent, low viscosity, no mixing — it flows into close-fitting joints and fixtures in under 5 seconds on ABS, PVC, nitrile, and phenolic at 22°C. As of August 2026, a standard 20 ml pack is ₹234 incl GST from our Ghaziabad warehouse.
Not epoxy. Not threadlocker. An instant adhesive built for plastics and rubbers.
Loctite 406 by Henkel is a low-viscosity ethyl cyanoacrylate instant adhesive — the same chemistry family as everyday superglue, but engineered for production. It is a transparent, one-part liquid that cures on contact with surface moisture, fixtures in under 5 seconds on most plastics and elastomers, and is qualified to A-A-3097.
Fixtures in seconds
Under 5 seconds on aluminum, neoprene, nitrile, ABS, PVC, and phenolic at 22°C and 50% RH. Degreased steel takes 20–45 seconds.
Bonds plastics & rubbers
Formulated for plastics and elastomers with low surface energy. ABS, PVC, polycarbonate, nitrile, neoprene, phenolic — one product covers them all.
One part, no mixing
Low viscosity lets it flow into close-fitting joints and form a thin bond line. Cure is driven by humidity — 40–60% RH at 22°C gives the fastest set.
Complete Specifications from Henkel TDS
| Property | Value | Test Method |
|---|---|---|
| Technology | Cyanoacrylate | - |
| Chemical type | Ethyl cyanoacrylate | - |
| Appearance (uncured) | Transparent, colorless to straw liquid | Visual |
| Components | One component — requires no mixing | - |
| Viscosity at 25°C (Cone & Plate) | 12–22 mPa·s (cP) | 3,000 s⁻¹ |
| Viscosity at 25°C (Brookfield) | 15–25 mPa·s (cP) | LVF, Spindle 1, 30 rpm |
| Specific gravity at 25°C | 1.1 | - |
| Cure mechanism | Humidity — cures in contact with surface moisture | - |
| Fixture time (degreased steel) | 20–45 seconds | 22°C, 50% RH |
| Lap shear strength (steel, grit blasted) | 15.5 N/mm² (2,250 psi) | ISO 4587, 24 h @ 22°C |
| Key substrates | Plastics, rubber, metals | - |
| Qualification | Certified to A-A-3097 | Federal spec |
| Storage | 2°C to 8°C optimum (below 2°C or above 8°C adverse) | - |
Adhesive Strength by Substrate
Lap shear per ISO 4587 and block shear per ISO 13445, cured 24 hours at 22°C. Tensile strength per ISO 6922 on Buna-N rubber.
| Substrate | Lap shear (N/mm²) | Block shear (N/mm²) |
|---|---|---|
| Steel (grit blasted) | 15.5 | - |
| Aluminum (etched) | 12 | - |
| Zinc dichromate steel | 14 | - |
| ABS | 8.8 | 23.7 (substrate failure) |
| PVC | 8.7 | 1.8 |
| Polycarbonate | 9.1 | 13.1 |
| Phenolic | 11.3 | 13.8 |
| Neoprene | 1 | - |
| Nitrile rubber | 1.2 | - |
Tensile (ISO 6922, Buna-N): 13 N/mm²; 10 seconds after cure, at least 6.9 N/mm². On plastics, joints often fail in the substrate before the adhesive — a sign the bond is stronger than the part.
Which Job Should You Use Loctite 406 For?
406 is a low-viscosity instant adhesive for plastics and rubbers — not an epoxy and not a threadlocker. Pick your job below to see if it fits.
| You want | Buy | Why | Price |
|---|---|---|---|
| Bond plastics or rubbers in seconds | Loctite 406 | Fixtures in under 5 seconds on ABS, PVC, nitrile, neoprene, phenolic at 22°C | ₹234 |
| Bond low-energy plastics | Loctite 406 + primer | Use Loctite 770 primer on difficult plastics to improve initial bond strength | ₹234 |
| High-speed production assembly | Loctite 406 | Low viscosity flows into close-fitting joints; thin bond lines cure fastest | ₹234 |
| Bond gaskets, seals, or rubber parts | Loctite 406 | Formulated for elastomers; tensile strength 13 N/mm² on Buna-N per ISO 6922 | ₹234 |
Not for: Pure oxygen systems, chlorine or strong oxidizers, or parts that need gap filling — cyanoacrylates need thin bond lines. If you need epoxy adhesives instead, see our epoxy resin guide or Bondone Clear Cast.
Application Guide
Clean both surfaces
Clean the surfaces with a Loctite solvent or degreaser and let them dry. On low-energy plastics, apply Loctite 770 primer for a stronger initial bond.
Optional activator
If fixturing is too slow, apply activator to one surface and let it dry. Do not use activator on primed surfaces.
Apply one drop
Apply the adhesive to one surface only. Low viscosity spreads into a thin, even bond line — a single drop covers close-fitting joints.
Assemble within seconds
Assemble the parts immediately — within a few seconds. Move parts into final position before the bond starts to set.
Fillet curing
For gap-filling or very fast fixturing, apply activator to the assembled joint after bonding. The activator wicks into the bond line and cures it.
Clamp and wait
Hold or clamp the parts until the bond reaches handling strength. Full strength develops in 24–72 hours at 22°C and 40–60% RH.
Price & Availability
Bulk cartons and repeat supply contracts priced on request
Price valid until March 31, 2027. Includes one standard 20 ml pack of Loctite 406. Bulk packs and regular supply contracts available — WhatsApp for the current bulk rate and stock position.
UPI, bank transfer, or credit card invoice via Razorpay link. No COD. GST invoice provided. For enquiries, WhatsApp Jobin directly.
We ship PAN India from our Ghaziabad warehouse — typically 2-5 business days via Delhivery, Blue Dart, or surface transport for bulk. Orders before 12 PM go out same day. All sales are final; see our refund policy.
Need Loctite 406 today?
WhatsApp Jobin directly. He will confirm stock, share the Henkel TDS, and arrange dispatch from Ghaziabad within 24 hours.
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