1381-R1 - Medium Modulus Resin

Medium Modulus Epoxy Resin –  

Medium viscosity, thixotropic, rigid epoxy resin with excellent physical properties. Fast wetting of reinforcement materials. Use 1381 R-1 where resistance to draining or run-off is desirable. 100% solids, highly resistant to crystallization in cold environments. No VOCs and DOT non-regulated.

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Suggested Uses

Hand lay up laminating, vertical laminates, tooling and pattern work.

Properties of Rhino 1381-R1 Epoxy Resin (neat)

Viscosity:1,900 - 2,100 cps
EEW:207 - 212
Color:Translucent, light blue liquid
Weight/Gal:9.4 lbs


Recommend Rhino 1381-R1 be used between 65° – 85°F (product and ambient temperatures). Use below 45°F requires special hardener selection, consult with Rhino sales personnel for low temperature recommendations. Remove all surface contaminates such as water, dirt, rust, and petroleum products. Mold surfaces must be waxed or otherwise “released” prior to epoxy application. All Rhino curing agents are compatible with Rhino 1381-R1 so proportion resin and hardener in accordance with the selected Rhino hardener. Mix resin and hardener for 3 – 5 minutes being certain to scrape the bottom and sides of the mixing container. Mix no material than may be applied before the expiration of the pot life.


Rhino 1381-R1 cures overnight at typical ambient temperatures (65° – 85°F) with full properties developing in 7 days, see hardener data for specific cure schedules and properties.

How Supplied

500lb drums (net weight). FOB San Diego, CA.


Rhino Equipment
Civil Engineering
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Resins - 1316 - 1409
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