RDH-8433 Fast Cure Hardener — Quart

RDH-8433 Fast Cure Hardener — Quart

RDH-8433 Fast Cure Hardener is a rapid-reacting epoxy hardener formulated for room-temperature use when quick turnaround is essential. It develops handling strength fast and reaches a durable cure suitable for bonding, laminating, coating, and time-critical repairs.

Size: Quart (32 fl oz / 0.95 L). Use only with a compatible RDH epoxy resin (resin sold separately).

Key Benefits

• Fast cure at ambient temps for short recoat and clamp times.
• High bond strength on composites, wood, and many metals.
• Low color / workable viscosity for clear finishes and easy wet-out.
• Low-blush formulation (if blush occurs, it removes easily with water wash).
• Durable final properties with excellent adhesion and chemical resistance after full cure.

Typical Applications

• Hand layup and small vacuum-bag laminates
• Structural bonding, fillets, and secondary bonding
• Coating, sealing, fairing, and field repairs
• Mold/plug work where short cycle times are needed

Mixing & Use

• Mix with the matching RDH epoxy resin at the ratio specified on the system TDS (by volume or weight).
• Measure accurately and blend thoroughly, scraping cup sides and bottom to ensure a uniform mix.
• Apply in thin films or small batches to control exotherm; large masses gel faster.
• If amine blush is observed, wash with water and a light abrasive pad before sanding or recoating.

Safety

• Wear gloves and eye protection; provide adequate ventilation.
• Avoid skin contact; wash thoroughly with soap and water after handling.
• Refer to the product SDS for full precautions and first-aid guidance.

Note: Pot life, gel time, cure schedule, and recoat windows vary with resin selection, batch size, and shop temperature. For exact processing parameters, consult the RDH-8433 Technical Data Sheet.