HY-E628 Addition Curing Platinum Cure Silicone Rubber 28 Shore A for PU Casting Cultured Stone and General Mold Making
HY-E628 is a 28 Shore A addition curing, platinum catalyzed two component silicone rubber. It cures with near-zero shrinkage and high tear strength, suited to PU casting, cultured stone and general mold making. MOQ 2kg.
Product Overview
Medium-firm platinum cured silicone; A and B mix 1:1 or 10:1 and cure at room or heated conditions.
Technical Specifications
HY-E628; 28 Shore A; semi-translucent or custom color; -60 to 200 Celsius; packs 1kg to 200kg.
Product Images

Packaging, pouring flow, demolded PU or cultured stone pieces.
Product Features
This RTV-2 silicone gives near-zero shrinkage and high tear strength. HONG YE SILICONE runs about 20 lines, around 220 tons/month, with small-batch support.
How to Use
Stir A and B, mix 2-3 minutes, vacuum degas, pour over the master model, cure, then demold.
Application Scenarios
At 28 Shore A this silicone rubber for molds suits PU casting, cultured stone, resin crafts, concrete ornaments and repeated pours.
Buyer Benefits
Low shrinkage cuts rejected molds; high tear strength extends mold life; 2kg MOQ eases trial orders.
Certifications
ISO9001, RoHS, REACH, FDA, UL and CE support major export markets.
Customization
Color, pack size and mix ratio are adjustable to project needs.
Production and QC
Pre-production sampling and pre-shipment inspection keep batch consistency.
FAQ
MOQ 2kg; food grade with FDA documents; demold time per TDS; samples supported; packs 5kg to 200kg.