FDA Grade Low Viscosity Platinum Cure Silicone Rubber 30 Shore A 1:1 for Candle & Soap Molds

This FDA grade platinum cure (addition-cure) 1:1 liquid silicone rubber is a two-component mold-making silicone supplied as HN-E630 in the HN-E6XX series by a direct China manufacturer, Shenzhen Hanast New Materials Co., Ltd. Mixed at a simple 1:1 ratio by weight and cured at room temperature or by gentle heating, it delivers a tough, high-precision translucent elastomer with no low-molecule release and ultra-low shrinkage — ideal for candle and soap molds, as well as food-contact and general high-detail RTV-2 mold making.

Key Features

• FDA grade food safe — certified with FDA, MSDS and RoHS documentation for export compliance
• Shore A 30±2 hardness (HN-E630) — medium grade for candle, soap, craft and general mold making
• Two-component addition-cure (platinum) RTV-2 system; foolproof 1:1 mix ratio by weight
• Ultra-low linear shrinkage (≤0.1%) for excellent dimensional accuracy on complex geometries
• High tensile strength (6.2 MPa), good tear strength (16 kN/m) and clean demolding for long mold life
• Viscosity 5000±500 mPa·s, customisable per request; good flow for detailed molds
• Room-temperature cure (3-4 h at 25°C); heat-accelerated to ≤20 min at 80-100°C; 30-40 min pot life
• Non-toxic, odourless, non-corrosive; no low-molecule release; −50°C to 200°C; 12-month shelf life

Typical Applications

• Aromatic candle molds (pillar, votive, tealight, decorative and 3D candle molds)
• Handmade soap molds (cold-process, melt-and-pour, glycerine and decorative soap)
• Wax melts, wax sachets and home-fragrance molds
• Chocolate, candy, gummy and food-contact molds (food safe)
• Cake, baking, ice cube and dessert molds
• Resin casting, jewellery, figurine and high-precision arts & crafts molds
• Plaster, gypsum and cultural stone craft molds; concrete decorative molds
• Medical and skin-safe products; soft prosthetics and simulation models
• Rapid prototyping and precision model reproduction
• Any RTV-2 mold application requiring high precision and easy demolding

Technical Data (HN-E630, 30 Shore A)

Mixing & Application

1. Pre-mix: stir Components A and B thoroughly before use to ensure homogeneity.
2. Weigh A and B at exactly 1:1 by weight using a precision scale.
3. Mix thoroughly for 2-3 minutes, scraping the container walls and bottom.
4. Degas under vacuum to remove entrapped air for bubble-free molds.
5. Pour into the clean, dry mold frame within the 30-40 min pot life.
6. Cure at room temperature for 3-4 h, or heat at 80-100°C for ≤20 min; demold after full cure.

Why Choose Us

• China factory-direct manufacturer (Shenzhen Hanast New Materials Co., Ltd.) with 10+ years of silicone experience
• OEM / ODM custom formulation, private label, custom hardness (Shore A 0-60), colour, viscosity and packing
• FDA, MSDS and RoHS documentation for export compliance
• Bulk wholesale supply and exporter capacity with stable batch-to-batch quality for mass production
• Complete TDS / hardness / viscosity selection guide and technical support
• Free 1 kg samples for evaluation; fast lead time and export packing

About This Supplier

Shenzhen Hanast New Materials Co., Ltd. is a professional manufacturer specialising in the research, development, manufacturing and global supply of industrial silicone materials. As a strategic branch of the renowned Shenzhen Kanglibang Technology Co., Ltd., Hanast integrates over a decade of chemical adhesive expertise with a cutting-edge 40,000-square-meter modern production base (including our newly expanding Jiangmen facility) to deliver high-capacity, reliable material solutions worldwide.

We serve as a vital tier-one supplier and OEM/ODM partner for global factories, procurement managers and engineering teams across diverse sectors, including electric vehicles (EV), battery energy storage systems (BESS), solar inverters, LED lighting and industrial automation.

FAQ

1. Q: What is the mix ratio and cure time of this silicone rubber?

A: Mix Component A and Component B at a 1:1 ratio by weight. Pot life is 30-40 minutes at 25°C. It cures in 3-4 hours at room temperature, or in 20 minutes or less at 80-100°C for fast production.

2. Q: Is this silicone good for candle and soap molds?

A: Yes. The 30 Shore A (HN-E630) grade is a tough, high-precision translucent silicone with ultra-low shrinkage (≤0.1%) and clean demolding — ideal for aromatic candle molds, handmade soap molds and decorative 3D candle and soap designs, and it is food-safe for food-contact molds.

3. Q: Which molds is the 30 Shore A grade best for?

A: The 30 Shore A (HN-E630) medium grade is ideal for candle molds, soap molds, craft, resin, plaster and general molds where a firmer mold is preferred. Softer grades (5-20 Shore A) suit delicate and food molds, while harder grades (35-50 Shore A) suit rigid molds and high-wear parts.

4. Q: What must I avoid to prevent platinum catalyst poisoning?

A: Platinum-cure silicone may fail to cure in contact with organotin compounds, sulfur / polysulfide, amines, polyurethane, phosphorus compounds, organic acids and solder flux. Keep all substrates, tools and containers clean, and never mix with tin-cure silicone residues.

5. Q: What are the MOQ, supply ability and delivery time?

A: MOQ starts at 20 kg. Supply ability is 50 tons per month, with about 3-5 days lead time for samples and 10-15 days for bulk orders. Components A and B are packed in 10/20/25 kg iron or plastic drums, or as 20/40/50 kg kit sets.