Epocast® 1618 D/B US 6 Oz Epoxy Syntactic

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Epoxy Syntactic

  • Quick Setting
  • Self Extinguishing
  • Pumpable

Epocast® 1618 D/B Epoxy Syntactic is a low-density, self-extinguishing compound for potting fasteners in honeycomb structures. The lightweight epoxy is easy to extrude through a 1/8 in (3mm) nozzle orifice but is non-flowing after application. Epocast® 1618 D/B Epoxy Syntactic sets quickly at room temperature and is qualified to BMS 5-28 type 18, Class 1. It is the suggested alternative for Epocast® 1616 A/B Epoxy Syntactic, Epocast® 1620 D/B Epoxy Syntactic systems.

Typical Properties as Received

Property 1618-D Resin 1618-B Hardener 16-18 D/B System Test Method
Color White Amber White Visual
Specific Gravity 0.60 1.00 0.70 ASTM-D-1622
Viscosity, cP at 77°F (25°C) Paste 400 Paste ASTM-D-2196
Gel time, 57 gms at 77°F (25°C), minutes N/A N/A 15 ASTM-D-2471
Shelf life at 77°F (25°C), unopened, months 6 6 N/A N/A

Mix Ratio

To 100 parts by weight of Epocast® 1618-D resin, add 14 parts by weight of Epocast® 1618-B hardener. Mix both components thoroughly for several minutes to ensure complete blending.

Cure Schedule

24 hours at room temperature or gel at room temperature plus five hours at 125°F (52°C).

Typical Cured Properties (Not for specification purposes)

Test Result Test Method
Compressive strength, Ksi (MPa) at 77°F (25°C) 5.00 (34.5) ASTM-D-695
Compressive modulus, Ksi (MPa) 350 (2,414) ASTM-D-695
Weight change, 24 hours immersion at 77°F (25°C)

MIS-S-3136, Type III Test Fluid

Mil-M-5606 Hydraulic Fluid

Skydrol 500-A

Distilled Water











Flammability Self-extinguishing N/A
Tensile lap shear, Al/Al, psi (Mpa) 700 (4.8) ASTM-D-1002


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