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
Product & Application Gallery

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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