Why Chemical Anchors Matter on Every Fixing Job
If you’re fixing threaded rod, rebar or heavy fixtures into concrete, masonry or brick, a mechanical anchor won’t always cut it. Chemical (bonded) anchors distribute load across the full embedment depth, work in cracked and non-cracked concrete, and hold up in demanding structural, seismic and high-temperature applications. That’s why Rawlplug’s chemical anchor range has become a go-to choice for tradies, engineers and builders across Australia — and why Topfix keeps the full range in stock.
In this guide, we break down the three core Rawlplug chemical anchor systems — R-KEM-II, R-KER-II and R-KEX-II — compare them against the equivalent products from Hilti, Simpson Strong-Tie, ICCONS, fischer, Ramset, Powers Fasteners, Soudal, DEWALT and Mungo, and explain why so many trade professionals are switching to Rawlplug.
The Rawlplug Bonded Anchor Range at a Glance
| Product | Resin Type | Best For | Cartridge Size |
|---|---|---|---|
| R-KEM-II | Styrene-free polyester | General-purpose, medium load, 15 approved substrates | 300 ml |
| R-KER-II | Hybrid vinylester | High loads, cracked concrete, hot climates | 400 ml |
| R-KEX-II | Pure epoxy | Heavy structural, seismic (C1/C2), wet & dry substrates | 385 ml |
All three resins share a common engineering backbone: a 100-year working design life (certified to EAD 330499-01-0601), a self-opening cartridge system that makes correct mixing virtually foolproof, and manufacture in Rawlplug’s ISO-certified production plant in Poland.
R-KEM-II: Styrene-Free Polyester Resin
R-KEM-II is Rawlplug’s best-selling, general-purpose bonded anchor and the natural starting point for most trade and construction fixings.
Key advantages:
- Self-opening cartridge system — impossible to cut the clip incorrectly
- ETA-certified for 15 substrates, including hollow and solid brick, sand-lime brick, aerated and lightweight concrete blocks, and even timber
- Odour-free formulation, safe for indoor use
- 100-year working tunnel life
- Available in the eco-friendly Cartridge Free System (CFS)
- ETA-12/0528 approved
Comparable competitor products: Ramset Chemset 101, DEWALT PV 45 PRO, Powers Fasteners AC100 E / PGP 50, Soudal Soudafix CA 1400, Mungo MIT SP-300 / SP-400, ICCONS Ultra-Fix Plus, fischer FIS V (300T/400C) / FIS P, Simpson Strong-Tie Poly GP, Hilti HIT-1 / HIT-HY 270, 170, 10.
Best for: balustrades, shelving, general anchor bolts, hollow masonry fixings, and jobs where mechanical anchors aren’t practical.
R-KER-II: Hybrid Vinylester Resin
Sitting between polyester and full epoxy, R-KER-II is engineered for higher loads and tougher environmental conditions — and Rawlplug positions it as a genuinely cost-effective alternative to epoxy.
Key advantages:
- No cutting required — mixes perfectly every time via the self-opening cartridge
- Developed to perform in high temperatures, suited to hot-climate regions
- Extensive certification: ETA, C1, VOC, R240, C1 & C7
- Delivers some of the highest resistance loads in the hybrid category
- Excellent performance in cracked concrete
- 100-year working tunnel life; available in Cartridge Free System
Comparable competitor products: Ramset 801 XTREM XC, Powers Fasteners AC 100 PRO / AC 200+, Soudal SoudaFix VE-400 SF, Mungo MIT Hybrid Plus, ICCONS BIS-HY Gen2 / BIS-V Vinylester, Simpson Strong-Tie AT-HP Blue, Hilti HIT-HY 200-R V3.
Best for: structural fixings in cracked concrete, projects needing high load capacity without the full cost of epoxy, and applications in hot climates such as Western Sydney summer conditions.
R-KEX-II: Pure Epoxy Resin
For the most demanding structural applications — heavy threaded rod, rebar doweling, and seismic zones — R-KEX-II is Rawlplug’s pure epoxy solution.
Key advantages:
- Self-opening cartridge, no cutting, mixes perfectly for both C1 and C2 substrates
- Seismic ETA certification and approvals
- Suitable for use in both wet and dry substrates
- Performs in cracked and non-cracked concrete with threaded rods and rebar
- Rated with a safety factor of 0 at high temperatures, meaning every cartridge performs identically batch to batch
- Cartridge Free System (CFS) available
- 100-year working tunnel life
Comparable competitor products: Ramset REO 502 Plus / Epcon C8 Xtrem, Simpson Strong-Tie SET-XP, Powers Fasteners Pure 150 PRO, Mungo MIT-600, fischer FIS EM Plus, ICCONS BIS-E / BIS-PE Pure Gen3, Hilti HIT-RE 500 V4 / HIT-HY 200-R V3 / HIT-RE 100.
Best for: heavy structural anchoring, seismic-rated installations, rebar doweling, and wet or submerged fixing conditions.
Rawlplug vs the Competition: Why Trades Are Switching
Rawlplug’s chemical anchor range goes head-to-head with every major brand on the market — Hilti, Simpson Strong-Tie, ICCONS, fischer, Ramset, Powers Fasteners, Soudal, DEWALT and Mungo — but stands out on a few key points:
- Self-opening cartridge system across the whole range. Where some competitor cartridges rely on the installer cutting the nozzle or seal correctly, Rawlplug’s mistake-proof design removes a common site error that leads to poor mixing and weak bonds.
- 100-year working tunnel life on every product, backed by EAD 330499-01-0601 certification — matching the design life claims of the premium Hilti and Simpson Strong-Tie ranges.
- Consistent batch-to-batch performance. R-KEX-II’s “safety factor of 0” claim means there’s no variability between cartridges, even at elevated temperatures — a genuine differentiator versus cheaper hybrid alternatives.
- Broader substrate approval. R-KEM-II’s certification across 15 substrates (including timber) is wider than many single-purpose polyester competitors.
- Eco-friendly Cartridge Free System (CFS) option across the range, reducing plastic waste on site without compromising performance — not all competitor brands offer this.
- ISO-certified Polish manufacturing, giving consistent quality control that stands up against German (fischer, Hilti) and US-manufactured (Simpson Strong-Tie, Powers Fasteners) alternatives — often at a more competitive price point.
For trades comparing on price and performance, R-KER-II in particular is worth a close look, since Rawlplug markets it directly as a lower-cost route to epoxy-grade performance in cracked concrete.
Rawlplug Chemical Anchors — In Stock at Topfix
Topfix stocks the full Rawlplug bonded anchor range — R-KEM-II, R-KER-II and R-KEX-II — along with the compatible dispensing guns, mixing nozzles and static mixers, ready for trade pickup or delivery across Sydney.
Whether you’re fixing balustrades and shelving with R-KEM-II, working on cracked concrete with R-KER-II, or need seismic-rated epoxy performance with R-KEX-II, our team at Moorebank can help you choose the right cartridge, load rating and quantity for your job.
Get in touch with the Topfix team today to check current stock, trade pricing, and delivery availability for Rawlplug chemical anchors.
Topfix — construction fasteners and building supplies, Moorebank NSW.