Structural Adhesive · Lapox · 1.8 kg

Lapox Ultra — 120 kg/cm² of bond strength for metal, stone, and ceramics.

Lapox Ultra is a structural epoxy adhesive — not a pouring resin. Si Epoxy supplies 10 kg to a Jaipur jewellery workshop every quarter; they set hundreds of stones each week with zero loose-gem returns in six months. Minimum 120 kg/cm² lap shear on aluminium, 100:80 mix by weight, 75–90 minutes of pot life. It bonds metal, ceramic, stone, and electrical components permanently. As of September 2026, a 1.8 kg kit is ₹1,598 incl GST from our Ghaziabad warehouse.

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spec-sheet · lapox-ultra
Lapox Ultra 1.8 kg epoxy adhesive kit by Atul
Lapox Ultra
Structural adhesive · 100:80
1.8 kg kit
100:80 by weight
75–90 min
28,000–42,000 mPas
min 120 kg/cm²
24 h @ 25°C
₹1,598
incl. GST · dispatched today Order on WhatsApp →
02Specs

Key Technical Data

Specs from the Atul Lapox range — the numbers that matter when you bond for a living.

Technical data (Lapox Ultra — Atul TDS): Mix ratio 100:80 by weight. Pot life 75–90 min at 25°C (100 g mix). Lap shear min 120 kg/cm² on aluminium after 24 h. Surface dry ~2 h, full cure 24 h. Food-contact safe after cure. Shelf life 2 years. Packaging 1.8 kg (₹1,598).

Mix Ratio

100:80

Resin to hardener, by weight

100 gResin80 gHardener

Pot Life

75–90

minutes at 25°C · 100 g mix mass

2 hSurface dry24 hFull cure

Lap Shear

120+

kg/cm² on aluminium (minimum)

28–42KmPas viscosityNo sagVertical use

Coverage

~12 m

linear metres per 1.8 kg at 1 mm bead

2 yrsShelf lifeSafeFood contact after cure
03Full Data

Complete Specifications

Download the full TDS sheet (PDF) →

Property Value Test Method
Mix ratio (resin:hardener)100 : 80 by weight-
Pot life at 25°C75–90 minutes (100 g mix)-
Viscosity28,000–42,000 mPas at 25°C-
Lap shear strength (aluminium)min 120 kg/cm² after 24 h cure-
Surface dry~2 hours at 25°C-
Touch dry~5 hours at 25°C-
Hard dry~9 hours at 25°C-
Full cure24 hours at 25°C-
Post-cure (optional)40–60°C for 2 h for maximum strength-
Food safetySafe for food contact after full cure-
Shelf life2 years, sealed at 2–40°C-

TDS and MSDS available on request with every order.

04Decide

Which Project Should You Use Lapox Ultra For?

Ultra is for bonding, not pouring. If you need a permanent structural joint, it is the right tool. If you need to cast a thick clear pour, you need a casting resin.

You want Buy Why Price
Bond jewellery stones permanentlyLapox Ultra 1.8 kg120 kg/cm² lap shear, food-safe after cure, water-resistant₹1,598
Repair automotive parts and bracketsLapox Ultra 1.8 kgHigh-viscosity structural bond that survives vibration₹1,598
Bond ceramic, metal, or electrical componentsLapox Ultra 1.8 kgBonds dissimilar substrates, 24 h full cure, no sag on verticals₹1,598
Pour a river table or art pieceClear Cast art resinUltra is an adhesive, not a pour resin — it does not level or castSee Clear Cast page

Not for: Deep casting, levelling coats, or thin pours — that is a job for Clear Cast or ClearLam CC.

For help choosing between products, see our Epoxy Resin India Guide.

06Quick Answer

Straight Answers

How much does Lapox Ultra cost?

1,598 for a 1.8 kg kit — about ₹888 per kg — with the price valid until March 31, 2027. PAN India shipping from our Ghaziabad warehouse, GST invoice included.

How strong is the bond?

120 kg/cm² minimum lap shear on aluminium after a 24-hour cure — stronger than most structural epoxies at this price point. The joint often outlasts the parts being bonded.

Can I use Ultra on vertical surfaces?

Yes. At 28,000–42,000 mPas viscosity it stays exactly where you apply it. No sagging, no drips, even on walls and vertical panels. Apply with a spatula and it holds in place during cure.

Is Lapox Ultra or Lapox Fillo better for a metal repair?

Yes, for load-bearing metal-to-metal bonds use Lapox Ultra (120 kg/cm² lap shear, hard cure). For filling dents, chips, or gaps before painting, use Lapox Fillo (₹835 / 1.8 kg, 100:80) because it is a non-sag thixotropic putty. Many fabricators use Ultra to bond a bracket and Fillo to smooth the joint after.

How much does it cost to bond metal with Lapox Ultra?

A 1.8 kg kit is ₹1,598 (≈₹888/kg, valid until March 31, 2027). One kit bonds hundreds of small repairs or dozens of brackets; at 100:80 that works out to roughly ₹8–₹15 per structural joint depending on size, delivered from the Ghaziabad warehouse with a GST invoice.

08FAQ

Frequently Asked Questions

In 8+ years of supplying Lapox epoxies to fabricators across India, we process 1000+ orders every month - Ultra is the slow-cure clear we recommend for deep pours.

What does 100:80 mix ratio mean?

100 g resin + 80 g hardener = 180 g usable adhesive. Use a digital scale, never guess.

Is Lapox Ultra UV resistant?

It has good resistance to UV exposure once cured, but for prolonged outdoor use, a protective coating helps maintain the bond area's aesthetics.

Can I use a torch to remove bubbles?

No need. Ultra is a high-viscosity adhesive, not a thin pour resin. Bubbles are rarely a concern. Apply with a spatula or brush; the thick consistency doesn't trap air like a liquid resin.

What's the cure time?

Surface dry in ~2 hours, touch dry in ~5 hours, hard dry in ~9 hours, full cure in 24 hours at 25°C. Warming to 40–60°C speeds up the process.

Do you sell smaller kits?

We stock the 1.8 kg kit. It's enough for hundreds of jewellery stone settings or multiple repair jobs. Contact us for stock availability.

Is Ultra food-safe after curing?

Yes — Lapox Ultra is food-safe once fully cured (24 hours at 25°C). It is used for food-contact applications where a permanent, non-toxic bond is required. Always ensure full cure before food contact.

How do I polish Ultra?

Ultra is an adhesive, not a coating. Once cured, the bonded surfaces are permanent. For finishing bonded jewellery, polish the substrate material itself, not the adhesive joint.

Can I use Ultra on vertical surfaces?

Yes — that's a key advantage. With 28,000–42,000 mPas viscosity, Ultra stays exactly where you apply it. No sagging, no drips. Apply with a spatula and it holds in place during cure.

09Pricing

Price & Availability

₹1,598 per 1.8 kg kit (incl GST)

≈ ₹888 per kg — competitive for a high-performance structural adhesive

Price valid until March 31, 2027. Includes one 1.8 kg kit of Lapox Ultra (100:80, resin + hardener) from Atul's Lapox range. The 1.8 kg kit is the size we stock — enough for hundreds of jewellery stone settings or multiple repair jobs — WhatsApp for the current 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. For buyers in Delhi NCR, the Delhi dispatch guide and the Ghaziabad dispatch guide cover the fastest dispatch and warehouse pickup options.

Need Lapox Ultra for your workshop?

WhatsApp Jobin directly. He will confirm stock, share the Atul TDS, and arrange dispatch from Ghaziabad within 24 hours.

WhatsApp Jobin

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