EP21TP-2NV, EP21TPFL-1, EP21TPHT, EP30D-7, Super Gel 9 — Epoxy-Polysulfide and Urethane-Modified Flexible Systems

Country: · Model: EP21TP-2NV / EP21TPFL-1 / EP21TPHT / EP30D-7 / Super Gel 9

The epoxy-polysulfide and urethane-modified epoxies EP21TP-2NV, EP21TPFL-1, EP21TPHT, EP30D-7 and Super Gel 9 remain flexible after curing, from a gel up to 65 Shore D. They absorb vibration and shock and reduce stress on ceramics, glass and electronic components.

EP21TP-2NV: epoxy-polysulfide; 40–50 Shore D; elongation 40–80 %; 48–72 h at 24 °C; −62…+121 °C
EP21TPFL-1: low viscosity 2000–4000 mPa·s; 30–50 Shore A; elongation > 250 %; 3–5 days at 24 °C; −51…+121 °C
EP21TPHT: 1:1; 55–65 Shore D; elongation 20–40 %; −62…+177 °C
EP30D-7: urethane-modified epoxy; 90–100 Shore A; elongation 90–110 %; −73…+121 °C; dielectric strength 17.7 kV/mm

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Technical specifications

EP21TP-2NV	epoxy-polysulfide; 40–50 Shore D; elongation 40–80 %; 48–72 h at 24 °C; −62…+121 °C
EP21TPFL-1	low viscosity 2000–4000 mPa·s; 30–50 Shore A; elongation > 250 %; 3–5 days at 24 °C; −51…+121 °C
EP21TPHT	1:1; 55–65 Shore D; elongation 20–40 %; −62…+177 °C
EP30D-7	urethane-modified epoxy; 90–100 Shore A; elongation 90–110 %; −73…+121 °C; dielectric strength 17.7 kV/mm
Super Gel 9	urethane-modified epoxy gel; < 5 Shore A; 4–7 days at 24 °C; −73…+93 °C; n = 1.525
Dielectric constant	3.7–3.9 (epoxy-polysulfides)

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

EP21TP-2NV cures at room temperature in 48–72 h, has 40–50 Shore D, elongation of 40–80 %, and works from −62 to +121 °C. EP21TPFL-1 is low-viscosity (2000–4000 mPa·s), gives a soft rubber-like material of 30–50 Shore A after curing with an elongation of over 250 %, and is used for casting and potting sensitive components. EP21TPHT is mixed 1:1, has 55–65 Shore D, elongation of 20–40 %, and works up to +177 °C. EP30D-7 is a urethane-modified epoxy with 90–100 Shore A, elongation of 90–110 %, dielectric strength of 17.7 kV/mm and a range from −73 to +121 °C. Super Gel 9 cures at room temperature into a gel of less than 5 Shore A with a refractive index of 1.525 and a dielectric strength of over 16.5 kV/mm.

How to choose

The choice starts with the required hardness and temperature. For a harder joint working up to +177 °C use EP21TPHT, for soft rubber-like potting EP21TPFL-1, and for the softest protective gel Super Gel 9. When high impact toughness and dielectric strength are needed, there is EP30D-7. Epoxy-polysulfides are also among the fuel-resistant systems. If curing in seconds is needed, look at the UV systems UV10 and UV15, which cure in 10–30 seconds.