Gold Member Since 2008
Audited Supplier
Shenzhen Hong Ye Jie Technology Co., Ltd.

Silicon Rubber, RTV Silicone Rubber for PU Fountaimaking, Liquid Silicone Rubber manufacturer / supplier in China, offering Liquid Mold Making Silicone for PU Castings, RTV Rubber for Plastic Products Molding, Silicone Rubber for Concrete Flower Pot Molds and so on.

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Liquid Mold Making Silicone for PU Castings

Purchase Qty.:
200-1,999 2,000+
FOB Unit Price: US $16 US $8
Purchase Qty. (kg) FOB Unit Price
200-1,999 US $16
2,000+ US $8
Get Latest Price
Port: Shenzhen, China
Production Capacity: 8ton/Day
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: HY-635
  • Material: Silicone Rubber
  • Certifications: RoHS, MSDS, SGS, ISO9001:2000, UL
  • Trademark: Hong Ye silicone rubber
  • Specification: ISO9001, SGS
  • HS Code: 31900000
  • Raw Material: Silicone Rubber
  • Application: for PU Casting
  • Delievery Time: 3-5 Days After Obtaining The Payment
  • Transport Package: 25kg/Drum 200kg/Drum
  • Origin: Shenzhen Guangdong
Product Description

1.Condensation Silicone Rubber HY-635 is generally named two-component silicone rubber, white color, with mixing ratio of 2%~5%.

It is flowable liquid silicone & curing agent. It gets cured at room temperature 25ºC within 4-6 hours.

Very suitable for both pouring and brushing methods of operation for medium sized and large sized molds making.    

2. Application

HY-635 is widely used to make molds for GRC products, such as GRC screen, GRC panels, etc.

It is also applicable for concrete stones, PU/poly resin products, unsaturated resin products, plaster products, fibreglass products, gypsums crafts, cement statues, etc.

3. Parameters 

Mixing Ratio (%)3~5
Tensile-strength(kgf /cm2 ) 4
Tear-strength (kgf /cm )25±2
Elongation (%) 450

(Note: Other hardness is adjustable according to customers' requirements.) 

4. Advantages 

1). Low shrinkage

2). Good fluidity, good operability, good for pouring method;

3). Excellent mechanical properties, in particular tear strength and tensile strength;

4). High duplication times and repeated use;

5). High temperature resistance, High simulation;

6). Adjustable for various applications with various requirements on the operation time or curing time.

5. Operation Instructions

The mixing ratio & operation time

1). If you add curing agent 1%, the silicone material can be operated within 2.5 hours and the

mold can be demoulded after 6-8 hours.

2). If you curing agent 2%, the silicone material can be operated within 50 minutes to 1 hour and

the mold can be demoulded after 2-3 hours.

3). If you add curing agent 3%, the silicone material can be operated within 28 - 30 minutes and

the mold can be demoulded after 1.5-2 hours.

4). If you add curing agent 4%, the silicone material can be operated within 10- 15 minutes and

the mold can be demoulded after 1 -1.5 hours.


Product size & hardness

If the product is of small size with detailed patterns, the soft silicones 10 shore A to 20 shore A are recommended;

If the product is of very large size, the hard silicones 30 shore A to 40 shore A are recommended;

If the product is of large size with detailed patterns, the moderate silicone 30 shore A is recommended;

Liquid Mold Making Silicone for PU Castings

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