Unsaturated polyester resin
SIHE Vacuum Infusion Resin Series

Suitable for
Resins for vacuum infusion and related closed-mould processes. Each grade has its own processing window and application direction; SH9265 is identified separately for RTM.
Grade selection
Grades and application options
| Resin grade | Viscosity (mPa·s) | Gel time (min) | Solids content (%) | Key characteristics |
|---|---|---|---|---|
| SH191Q | 300-350 | 15-16 | 60-68 | Pre-accelerated unsaturated polyester resin with high reactivity and fast cure. Suitable for hand lay-up, spray-up and vacuum infusion, producing parts with good mechanical properties. |
| SH193A | 150-300 | 30-60 | 60-68 | Pre-accelerated unsaturated polyester resin with high reactivity and fast cure. Suitable for hand lay-up, spray-up and vacuum infusion, producing parts with good mechanical properties. |
| SH9265 | 150-300 | 40-60 | 60-64 | Pre-accelerated unsaturated polyester resin with high reactivity, good glass-fibre wet-out and low cure shrinkage. Suitable for FRP products moulded by RTM. |
Gel time is measured in a 25°C water bath using 100 g of resin, 1 g of SIHE cobalt accelerator and 1 mL of standard MEKP. These are test conditions, not a production-use recommendation. Viscosity and gel time may be adjusted within the specified ranges according to seasonal conditions. Please refer to the applicable instructions before use.
These are grade-specific reference values for preliminary selection. SIHE confirms the delivery grade against your application and process.
Application and process
SIHE Resin Application Cases

Images are provided for product and application reference. Final material selection should be confirmed based on the actual process and service conditions.
Buying information
Supply Information
- Manufacturing & supply
- SIHE · Manufactured by SIHE
- Packaging
- 220 kg / steel drum
- Availability & dispatch
- SIHE will confirm availability, dispatch location and timing for your selected product and destination.
- Order quantity
- Share your estimated quantity. The order quantity is confirmed for the selected product.
- Quotation currency
- Vietnam: VND. Other countries: USD. Final quotation currency is confirmed by SIHE.
Technical documents & samples
Download the general product overview or request the TDS and SDS for this product. SIHE confirms the exact grade, source revision, destination market and language; sample specification, availability, cost and freight are confirmed with you.
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