FDA Certified 30 Shore A Platinum Cure Silicone Rubber with 1:1 Mix Ratio for Gypsum Culture Stone and Wall Tile Molds

Hanast HN-E630 belongs to the HN-E6XX Series, a two-component food grade addition-cure (platinum-catalysed) liquid silicone rubber developed for gypsum molds, culture stone molds, wall tile molds, cement component molds and craft molds. Components A and B are mixed 1:1 by weight and cure at room temperature or with heat acceleration. The series covers eleven hardness grades from Shore A 0 to 50, so a single material family serves soft life-casting skins, fine grout detail, standard wall tile and rigid high-wear cement component molds. Cured rubber is odourless, non-toxic, non-corrosive, certified to FDA, MSDS and RoHS, releases no low-molecule by-products, resists -50 °C to 200 °C and shrinks 0.1 % or less, which keeps pattern dimensions repeatable from the first pour to the last.

• China Factory Direct Supply - Shenzhen / Guangdong manufacturer with a 40,000 square metre production base, selling direct to mold shops, distributors and importers without trading-company mark-up.
• OEM and ODM Private Label - custom hardness, viscosity, colour, pot life, drum label and packaging under the buyer's own brand for private label programs.
• Wholesale and Bulk Export - 10 / 20 / 25 kg drums and 20 / 40 / 50 kg kits, palletised export packing, non-dangerous goods classification for fast customs clearance.
• FDA, MSDS and RoHS Compliance - full certification and documentation supplied with every lot, so the same grade also serves food contact and skin contact molds.
• TDS Hardness and Viscosity Selection Guide - an eleven-grade selection table maps Shore A 0-50 to gypsum, culture stone, wall tile, cement component and craft applications, cutting trial-and-error for buyers.
• Free Sample for Evaluation - a 1 kg trial kit is available for hardness, tear and demolding tests before a bulk order is placed.
• Platinum Addition-Cure Supplier - 1:1 addition cure with no low-molecule release during crosslinking, giving dimensionally stable molds and clean demolding.
• High-Fidelity Texture Reproduction - 5000 ± 500 mPa·s viscosity flows into fine grout lines, stone grain, brick texture and undercuts, with vacuum degassing for pinhole-free working faces.
• Tear and Elongation Balance - 6.2 MPa tensile strength, 16 kN/m tear strength and 470 % elongation at 30 Shore A resist tearing when demolding deep relief culture stone and cement components.
• Dual Curing Mode - 3-4 h at 25 °C for large block molds or 20 minutes or less at 80-100 °C for production lines, with a 30-40 min pot life for mixing, degassing and pouring.
• Stable Supply and Shelf Life - 50 tons per month capacity, 12 months shelf life unopened below 25 °C, TDS and MSDS per lot, and technical support for grade selection.

Grade selection: HN-E600 to HN-E610 for ultra-soft gel, life casting and silicone doll skin; HN-E615 to HN-E625 for thin wall tile, fine grout detail, jewellery and delicate crafts; HN-E630 and HN-E635 for gypsum molds, culture stone, standard wall tile and cement components; HN-E640 to HN-E650 for thick pavers, concrete blocks, GRC and high-wear production molds. All grades share the same 1:1 mix ratio, 30-40 min pot life and 3-4 h room-temperature cure.

• Gypsum and plaster molds - gypsum mold, plaster mold, gypsum wall panel, plaster cornice, ceiling rose, column capital, relief panel, statue and figurine mold, decorative plaster craft.
• Culture stone and artificial stone molds - culture stone, cultural stone, faux stone veneer, ledge stone, stacked stone, rock face, cobblestone, artificial stone, terrazzo and quartz stone molds.
• Wall tile and wall panel molds - cement wall tile, split-face tile, 3D wall panel, wall cladding tile, decorative wall brick, interior feature wall and wall cap molds.
• Cement and concrete component molds - cement component, concrete element, paver, concrete block, GRC and GFRC casting, precast element, planter, balustrade and architectural concrete molds.
• Craft and art molds - craft mold, resin craft, epoxy casting, jewellery, candle, soap, photo frame, picture frame, ornament, life casting and wax molds.
• Prototyping and composites - rapid prototyping, vacuum bagging, shoe insole, printing pad and composite tooling molds.
• Food contact molds - chocolate, candy, fondant, gummy, ice cube, cake and baking molds.

1. Pre-mix: stir Components A and B separately until uniform before weighing.
2. Weighing: weigh A and B at exactly 1:1 by weight on a precision scale.
3. Mixing: mix for 2-3 minutes, scraping the container walls and bottom.
4. Degassing: vacuum degas to remove entrapped air and avoid pinholes on pattern faces.
5. Pouring: pour within the 30-40 min pot life and brush the first layer into deep grout lines, stone grain and undercuts.
6. Curing: cure 3-4 h at 25 °C or 20 min or less at 80-100 °C, then demold after full cure.

• Platinum addition-cure silicone may fail to cure in contact with organotin compounds, sulfur and polysulfide compounds, amines, polyurethane, phosphorus compounds, organic acids and solder flux residues.
• Keep substrates, tools and containers clean and free of these contaminants, and do not mix with condensation-cure (tin-cure) silicone residues.
• Do not add colourants or fillers before a small trial, because some additives disrupt catalyst activity.
• Use nitrile gloves, goggles and adequate ventilation. Store sealed below 25 °C away from acids, alkalis and direct sunlight.

• Components A and B: 10 kg / 20 kg / 25 kg iron or plastic drums; kits 20 kg / 40 kg / 50 kg per set.
• Store in original sealed containers below 25 °C in a cool, dry, ventilated area; shelf life 12 months unopened.
• Non-dangerous goods for transport; factory-direct OEM/ODM supply with TDS and MSDS documentation for every lot.
• Minimum order quantity 20 kg, 1 kg sample kit for evaluation, 50 tons per month supply capacity, 5-7 working days for stock and 10-15 days for bulk production.

Shenzhen Hanast New Materials Co., Ltd. manufactures industrial silicone materials at a 40,000 square metre production base in Guangdong, China, supplying platinum cure liquid silicone rubber to gypsum and plaster factories, culture stone and artificial stone producers, wall tile and cement component manufacturers, craft mold makers and composite processors worldwide.