Loctite Instant Adhesives 401, 406, 454, 480

Stocked item: delivered in 1–2 working days in Ho Chi Minh City, Binh Duong and Dong Nai; free delivery for orders from VND 20,000,000; defective items exchanged within 7 days. Shipping & return policy

Product code: LT-4XX · Specification: Loctite instant adhesives (401, 406, 454, 480, 495…)

Loctite Instant Adhesives

Delivery: stocked items are delivered in 24–48 hours; made-to-order items 3–7 working days.

Cyanoacrylate instant adhesives cure within seconds when pressed into a thin film: for bonding plastics, rubber, metal, gaskets, labels and small components. Choose by material and application: general purpose → 401; plastics/rubber → 406 (hard-to-bond PE, PP, PTFE: + primer 770); metals, acidic surfaces → 416; porous or vertical surfaces, gaps → 454 gel; display products where white residue is unacceptable → 460/403; shock and peel resistance → 480 (black, toughened); general → 495; 326 anaerobic acrylic + activator 7649 for bonding magnets and metals; 3463 epoxy putty for metal repair (sealing holes, damaged threads).

Code	Viscosity	Materials	Cure	Features	Packing
401	100 mPa·s	General purpose	3–10 s	Standard	20 / 50 / 500 g
403	1,200	General purpose	20 s	Low blooming, low odour	20 g
406	20	Plastics, rubber (PE/PP/PTFE: +770)	2–5 s	Very low viscosity	20 / 50 / 500 g
416	1,500	Metal, ceramics	30 s	Viscous, 0.15 mm gap	20 / 50
425	40–80	Plastics, adjusting screws	< 2 min	Plastic screw locking	20 g
454	Gel	Porous, vertical, wood	20 s	Non-sagging	3 / 20 g
460	40	Display products	20 s	No blooming	20 g
480	200	Metal, rubber	20–50 s	Toughened, black, shock resistant	20 / 500 g
495	30	General	5–15 s	Low viscosity	20 / 500 g
326	18,000	Metal, magnets, ferrite	Per TDS (used with 7649)	Anaerobic + activator	50 ml
3463	Putty	Metal	10 min	Repair, hole sealing	50 g

Henkel, CO per lot; expiry date printed on the packaging; storage of unopened bottles: 4xx series 2–8 °C, 326 8–21 °C (per Henkel TDS); MOQ 1 bottle.

FAQ
– White residue around the bond line? — Caused by adhesive vapour condensing; use 460/403 or improve ventilation.
– PE, PP or PTFE will not bond? — Apply primer 770, then use 406. Silicone is not in the material list of the 770 TDS — trial samples are needed.
– Storage after opening? — Close tightly and keep in a cool, dry place at room temperature; do not put opened bottles back in the refrigerator, to prevent moisture condensing into the adhesive.

How instant adhesives cure

LOCTITE 4xx instant adhesives are one-component cyanoacrylates. According to Henkel’s TDSs, moisture on the surface and in the air initiates the curing reaction; therefore:

Thin bond gaps cure fast, thick gaps cure much more slowly. Henkel states that 416 and 425 give the best results at a gap of about 0.05 mm.
Higher humidity speeds up curing; dry air-conditioned rooms and cleanrooms slow it down.
The “fixture time” on the TDS is when the bond reaches 0.1 N/mm² (measured at 22 °C / 50 % RH) — enough to handle, but not the final strength. The adhesive continues to cure for at least 24 hours before reaching full chemical and solvent resistance.
An activator speeds up curing on large gaps, but Henkel notes it may reduce the final strength — test beforehand.

Reference data from Henkel TDS

Code	Chemistry	Brookfield viscosity, 25 °C (mPa·s)	Typical fixture time
401	Ethyl	100–120	Steel, aluminium, rubber < 5 s; PC 5–10 s
403	Alkoxyethyl (low odour, low blooming)	1,100–1,650	Steel 20–45 s
406	Ethyl	15–25	ABS, PVC, rubber < 5 s
416	Ethyl	1,150–1,500	Steel 20–50 s
425	Ethyl / ester (low-strength threadlocking)	40–80	Fixture under 2 min
454	Ethyl, gel	18,000–40,000 (20 rpm)	Steel 30–60 s; ABS < 5 s
460	Alkoxyethyl (low odour, low blooming)	30–50	Steel 10–30 s
480	Ethyl, black, rubber-toughened	100–200	Steel 60–120 s; aluminium 10–30 s
495	Ethyl	20–60	Steel 5–10 s; aluminium < 5 s

Strength example: 401 achieves a shear strength of about 20 N/mm² on grit-blasted steel (ISO 4587). Henkel describes 480 as a rubber-toughened adhesive with increased flexibility, peel strength and impact resistance. 425 is used for low-strength locking of metal/plastic screws and for tamperproofing potentiometer adjusting screws, with a typical operating temperature range of −54 to +85 °C.

Bonding hard-to-bond plastics: primer 770

LOCTITE SF 770 is a primer that helps cyanoacrylate adhesives adhere to low-energy surfaces. Henkel recommends it only for PE, PP, PTFE and thermoplastic rubber, and not where the joint needs high peel strength. Application: brush or spray a thin layer onto the polyolefin surface only, let it dry, then bond immediately; whether the primer has been applied can be checked with a 365 nm UV lamp.

Blooming, odour and safety

White residue (blooming) is adhesive vapour condensing around the bond. Henkel designed 403 and 460 (alkoxyethyl-based) to be low-odour and low-blooming for poorly ventilated locations.
Do not wear cotton/wool gloves when using instant adhesives: cyanoacrylate reacts with cotton and wool in a strongly exothermic reaction that can cause burns and white smoke — a point worth stressing in factories used to cotton gloves. Use nitrile gloves.
Skin bonding: do not pull apart forcefully; soak in warm soapy water or apply acetone around the bonded area.
A small proportion of people exposed for long periods become sensitised to the adhesive vapour — provide local ventilation.
Do not use in pure oxygen systems or for sealing chlorine or strong oxidisers (Henkel).

Correct application

Clean and degrease the surfaces and let them dry.
If using an activator: apply it to one surface only; do not apply it to a surface that has been primed.
Apply the adhesive to the other surface (not the one with activator), just enough to form a thin film. Henkel notes not to spread the adhesive with paper or a brush.
Join the parts within a few seconds and align them accurately straight away, as the fixture time is short; hold still until fixed.

Storage and common mistakes

According to the TDS, unopened instant adhesives are best stored at 2–8 °C in a dry place; outside this range the adhesive properties may be affected. Allow the bottle to reach room temperature before opening so that moisture does not condense at the nozzle.
Do not pour unused dispensed adhesive back into the bottle — Henkel warns that dispensed adhesive may be contaminated.
Applying a thick layer to make it “stronger”: thick gaps cure slowly, are brittle and bloom easily.
Using instant adhesives on parts exposed to heat or long-term water immersion: the TDS shows strength drops as temperature rises and with humidity ageing — choose an epoxy or anaerobic adhesive for harsh conditions.
Bonding PP or PE without primer, or using primer on joints that must resist peel.

Technical references

LOCTITE product catalogue 2025 (Henkel, Japanese edition, 52 pages, code C56-2502S): data tables for threadlocking, thread sealing, retaining, flange sealing, activators, instant adhesives and anti-seize. The data on this page has been cross-checked against the 2025 catalogue. However, 401, 406, 454 and 495 in that catalogue are Japan-market versions (J suffix, with data different from the international versions), so the table on this page still follows Henkel’s international TDS. The Vietnamese 2008 edition is still useful for the application-based selection charts, but some of its figures are out of date.

Download LOCTITE catalogue 2025 (PDF, 4.7 MB) · Vietnamese 2008 edition: maintenance selection charts

Price: from 180,000 VND (excl. 8% VAT).

REQUEST A QUOTE: send the quantity and specifications you need — PRIMEAG quotes within 30 minutes.

Hotline/Zalo +84 906 108 292 · info@primeag.vn

Written by the PRIMEAG engineering team.

Request a quote

Updated: 2026-10-21

Giao tận nhà máy TP.HCM, Bình Dương, Đồng Nai, Long An, Tây Ninh · Kèm biên bản đo điện trở ESD theo lô · Hotline 0906 108 292

Loctite Instant Adhesives

How instant adhesives cure

Reference data from Henkel TDS

Bonding hard-to-bond plastics: primer 770

Blooming, odour and safety

Correct application

Storage and common mistakes

PRIMEAG CO., LTD

PRODUCTS

CONTACT