HY-E615 Silicone for Polyurethane Foam

HY-E6150

Designed for polyurethane foam including insulation panels and decorative trim and millwork. Compatible with rigid PU foam, flexible PU foam, self-skinning foam, high-density foam, and low-density foam.

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In the competitive world of polyurethane foam, every detail matters.

Hong Ye Jie's HY-E615 sets the performance standard for addition-cure silicone in polyurethane foam. At 15A Shore A, it provides toughness and precision.

Core Performance Features

1. Near-Zero Shrinkage (<0.1%)

The addition-cure chemistry releases no volatile byproducts during crosslinking, resulting in virtually zero shrinkage and dimensionally stable molds.

2. Outstanding Tear Strength (16-22 kN/m)

When pulling casts from complex geometries, tear resistance separates a long-lasting mold from one that fails early.

3. High Tensile (3.8-5.5 MPa) and Elongation (400-520%)

Tensile strength and elongation create a forgiving mold that handles unexpected demolding forces gracefully.

4. Optimal Viscosity (14000-18000 cps)

The calibrated viscosity reaches every corner of complex patterns while avoiding sag on vertical surfaces.

5. Flexible Working Time (50-100 min at 25 °C)

Pot life adjusts with ratio: 1:1 for extended time on large pours, or 10:1 for faster turnaround.

6. Food-Grade and Skin-Safe Certified

Skin-safe certification also suits medical prosthetics, wearables, and prolonged skin-contact applications.

Technical Specifications

Model: HY-E615 Hardness: 15A Shore A Viscosity: 14000-18000 cps Tear Strength: ≥16-22 kN/m Tensile Strength: ≥3.8-5.5 MPa Elongation at Break: ≥400-520% Mixing Ratio: 1:1 or 10:1 (by weight) Pot Life: 50-100 min at 25 °C Curing Time: 4-6 hours at 25 °C Temperature Resistance: -60 to 200 °C Shelf Life: 12 months (sealed) Certifications: ISO 9001, FDA, UL, CE, RoHS, REACH

Application Focus: Polyurethane Foam

The HY-E615 is formulated for polyurethane foam. At 15A Shore A, it balances demolding flexibility with shape retention. Typical projects include insulation panels, decorative trim and millwork, and furniture cushions.

Practical tips: Maintain mold temperature 40-50 °C for best surface quality. Use mold release designed for PU foam.

Compatible casting materials:

rigid PU foam
flexible PU foam
self-skinning foam
high-density foam
low-density foam

The inert cured silicone does not react with these materials.

Why Choose Hong Ye Jie Technology?

Hong Ye Jie's 25-year track record is built on consistent quality and global reach. Our 10,000 sqm facility with 20 lines produces 220 tons monthly. We support customers in 138 countries with 60 engineers, earning trust from Huawei, BYD, and Delta Electronics.

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Ready to upgrade your mold-making material? Request a free sample kit and technical assessment. We support custom colors and OEM packaging.