🔍Choosing the Right Bonding Agent

Not all bonding agents are built the same

In high-performance rubber compounds, the right adhesion system directly impacts strength, longevity, and compliance. Whether you’re working on tyres, hoses, conveyor belts, or sealing systems, choosing wisely is critical.

Here’s a concise comparison of today’s resorcinol-based dry bonding systems—and why RSA and RF stand out as top performers:

RF – Resorcinol Formaldehyde Resin
The legacy high-adhesion champion. Exceptional bond strength and fatigue resistance for tyres, conveyor belting, hoses, and multi-fabric reinforcement.

RSA – Resorcinol Stearic Acid
A cleaner, more user-friendly resorcinol blend. Reliable dispersion and strong adhesion—without excessive fuming or handling risk.

RDL – TECHNIC® RDL
A single-component dry bond system (resorcinol + donor + silica). Simplifies operations, but may not match RSA or RF in high-load interface durability.

RSB – Reso Silica Blend
Resorcinol pre‑dispersed on silica. Clean and dust-controlled, but needs a separate donor to activate its bonding potential.

RESO – Pure Resorcinol
High-performance donor—difficult to handle, linked to health risks (thyroid disruption, skin/respiratory irritation), and strongly regulated in the EU, nearly to the point of being banned.

RSA and RF continue to lead when performance and regulatory alignment matter most
Compounders consistently rely on RSA and RF for:

Higher adhesion strength and proven fatigue resistance
Safe and compliant workplace handling (especially with RSA)
Lower exposure versus using pure resorcinol or simple blends

Paul & Company supplies RSA and RF as proven high-performance solutions—ideal if you’re looking to enhance product quality, ensure regulatory compliance, and avoid complications tied to legacy or blend-based systems.

Let’s help you match the right bonding system to your compound—without compromise.
Get in touch with Paul and Company — trusted industrial chemicals & raw material supply specialists for over 60 years.