Transparent Orthopedic Insole Relief Gel | Cost-Effective Standard Grade Two Component Tank Sealant Jelly Gel

Product Overview:

Hong Ye HY-9409 is a two-component addition-cure transparent low-tack jelly gel developed for skin-contact and medical-adjacent products including silicone bra pads, breast prostheses, nipple covers, swimwear inserts and surgical positioning pads. Curing to a crystal-clear, buttery soft mass with a penetration of 150 plus or minus 30 (0.1mm), HY-9409 reproduces the realistic skin feel and gentle rebound of premium imported gels while offering excellent elongation, tear resistance and anti-yellowing performance. It is manufactured from food-contact and skin-safe raw materials, meets RoHS and REACH requirements, and is compatible with both room temperature curing and heat-accelerated curing for mass production. As a cost-effective standard grade, this variant offers proven performance at a competitive price for high-volume production. It is specifically formulated for pressure-relief gel pads for diabetic shoe insoles and medical cushions, where decades of field experience have shown that the seal must remain soft, tacky and compliant through thousands of hours of thermal cycling, vibration and maintenance operations. Backed by Hong Ye's nearly 20 years of silicone manufacturing expertise and supplied to customers in over 60 countries, HY-9409 combines the performance of premium imported gels with the cost efficiency, short lead time and responsive technical support of a Chinese manufacturer. Whether you are sealing a single biosafety cabinet or outfitting a 100,000-square-meter semiconductor fab, HY-9409 delivers consistent batch-to-batch quality, comprehensive documentation and application engineering support from first sample through full production ramp.

Key Features:

• 12 month shelf life when sealed and stored below 25C in dry ventilated conditions

• Soft jelly-like consistency with buttery skin feel, comparable to premium German Wacker gel

• Wide operating temperature range from -60C to 200C with stable physical properties

• Low density from 0.96 to 1.02 g/cm3 reduces material cost per sealed unit

• Excellent electrical insulation with dielectric strength above 20 kV/mm

• Customizable blue or transparent color, penetration from 120 to 260 (0.1mm), and tack level

• Compatible with automated meter-mix dispensing equipment for high-volume production lines

• RoHS and REACH compliant; food-contact and skin-safe formulations available on request

• Low exothermic peak during cure, safe for heat-sensitive electronic components and thin films

• Third-party test reports including RoHS, REACH, FDA and LFGB available on request

• Recommended model: HY-9409 - Transparent low tack tank sealant jelly gel

Technical Parameters:

Detailed Application Scenarios:

Self-adhesive nipple covers, strapless gel petals and backless bra accessories produced with HY-9409 benefit from the gel's controlled low tack and excellent clarity. The products can be peeled off and reapplied many times without leaving residue on the skin, and they resist deformation when carried in a handbag or travel case. For manufacturers, the 1:1 mix ratio and fast heat cure support cycle times of 30 to 60 minutes, enabling thousands of pairs per shift on multi-cavity molds. The anti-yellowing formulation ensures that even after months in retail display and warehouse storage, the gel remains water-clear.

In intimate apparel manufacturing, HY-9409 has become the material of choice for premium push-up bra pads, bridal inserts and swimwear enhancers. The gel is cast into thermoformed TPU or silicone film shells, where it cures into a crystal-clear, buttery soft mass that moves naturally with the body. Its low surface tack means the finished pad feels dry to the touch and does not stick to fabric during sewing or packaging, while its high elongation and tear resistance withstand repeated stretching, washing and compression. Swimwear brands specifically choose HY-9409 for its proven resistance to chlorine, salt water and suntan oil accelerated aging tests.

Quality & Compliance:

Every batch of Hong Ye HY-94 series jelly gel is manufactured under ISO 9001 certified quality management and tested for viscosity, mix ratio, cure time, penetration, color and tack before release. A Certificate of Analysis (COA) is provided with every shipment. Standard grades are tested to RoHS 2.0 and REACH SVHC requirements. HY-9409 uses food-contact grade raw materials and can be supplied with FDA 21 CFR 177.2600 and LFGB Section 30/31 test reports on request. All products carry a 12 month shelf life from manufacture date when stored sealed below 25C. Hong Ye has supplied jelly gel to cleanroom contractors, meter manufacturers, intimate apparel brands and medical device OEMs in over 60 countries since 2005.

Packaging:

Standard packaging options include 1kg trial kits (500g A + 500g B), 5kg kits, 20kg pails, 25kg pails and 200kg drums. Components A and B are supplied in separate containers within each kit. Custom packaging and private labeling are available for orders above 200kg. All kits are clearly labeled with batch number, manufacture date, expiry date and safety information.

Ordering and Logistics:

To order HY-9409, contact Hong Ye sales with your required model, quantity, destination country and preferred courier. We accept T/T bank transfer, PayPal for sample orders, and Alibaba Trade Assurance for online orders. Standard packaging ships from stock within 3 to 5 working days after payment. We ship worldwide via DHL, FedEx, UPS and sea freight for bulk orders. Dangerous goods classification is not required for addition-cure silicone gel under most transport regulations, simplifying international shipping. All shipments include commercial invoice, packing list, COA and safety data sheet.

Technical Support and Customization:

Hong Ye operates a dedicated technical service team staffed by silicone chemists and application engineers with an average of more than 10 years of industry experience. We support customers throughout the entire product lifecycle: initial grade selection based on your drawings and service conditions, on-site or remote pouring trials, gel channel and mold design review, cure profile optimization, failure analysis and ongoing quality improvement. For customers with special requirements, our R&D center can develop custom formulations with adjusted penetration (120 to 260 in 0.1mm units), custom Pantone colors, accelerated or delayed cure profiles, flame retardant grades meeting UL94 V-0, thermal conductive grades, food-contact FDA and LFGB certified grades, and medical grade formulations with biocompatibility testing. Custom development typically takes 7 to 14 working days from confirmed requirements to shipped samples, and the custom formula becomes your exclusive formulation for ongoing orders. We also provide gel consumption calculation, cost-per-seal analysis and comparison testing against your current sealant to help you make data-driven sourcing decisions.

Precautions:

Use polyethylene, nylon or nitrile gloves; never use natural rubber latex gloves. Avoid contact with sulfur-containing materials, amines, phosphorus compounds, tin-cured silicone and PVC, as these inhibit the platinum catalyst and prevent cure. Mix A and B at exactly 1:1 ratio by weight using a calibrated scale. Stir thoroughly for 3-5 minutes, scraping container walls and bottom. Do not exceed 100°C during heat curing. Ensure good ventilation during operation.

Storage:

Store sealed containers in a dry, ventilated area below 25°C, away from direct sunlight, sulfur-containing materials, amines, food and strong chemicals. Shelf life is 12 months from manufacture date. Reseal unused material immediately after dispensing. Refrigerated storage at 5-15°C can extend shelf life; allow material to return to room temperature before opening to prevent condensation.

FAQ:

Q: How long does the gel take to cure and can I speed it up?

A: At 25C the gel reaches touch-dry in 4 to 6 hours and full properties after 24 hours. For mass production, heat-curing at 60 to 80C reduces demolding time to 30 to 60 minutes. Do not exceed 100C as it may cause discoloration or surface defects. Low temperatures below 15C will significantly slow the cure.

Q: Can old gel in a filter tank or housing be topped up?

A: Yes. If the existing gel is still clean, soft and tacky, simply wipe the surface with a dry cloth and pour fresh gel on high. The fresh addition-cure gel bonds chemically to the clean cured gel. If the old gel has hardened, dried out, turned yellow or become contaminated, remove it completely, clean the channel, and refill.

Q: What causes incomplete cure or sticky spots and how can I prevent it?

A: Incomplete cure is almost always caused by contamination or off-ratio mixing. The most common contaminants are sulfur (found in natural latex gloves and some rubbers), nitrogen compounds (amines), phosphorus, tin-cured silicone and certain PVC products. These inhibit the platinum catalyst. Prevention: use nitrile or PE gloves, dedicated clean tools, accurate 1:1 weighing, and stir component B thoroughly before mixing.

Q: Does the gel require vacuum degassing before pouring?