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Tin Cure Silicone Rubber RTV2 20 Shore A Low Shrinkage Liquid for Precast Decorative Concrete Molds

Tin Cure Silicone Rubber RTV2 20 Shore A Low Shrinkage Liquid for Precast Decorative Concrete Molds

Product Details:
Place of Origin: Guangdong, China
Brand Name: Hanast
Certification: ROHS, SGS
Model Number: HN-620A/B
Detail Information
Place of Origin:
Guangdong, China
Brand Name:
Hanast
Certification:
ROHS, SGS
Model Number:
HN-620A/B
Mixing Ratio (A:B):
100:2
Viscosity:
18000-25000 Cps
Hardness:
20-30 Shore A
Tensile Strength:
3.1-4.1 MPa
Tear Strength:
19.8-24.3 KN/m
Elongation:
600-720%
Linear Shrinkage:
<=0.2%
Color:
Transparent / White
Operating Time:
30-40 Minutes
Curing Time:
3-4 Hours At Room Temperature
Shelf Life:
12 Months
Highlight:

High Light

Highlight:

Tin Cure Silicone Rubber RTV2

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Low Shrinkage Silicone Rubber

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Precast Concrete Mold Silicone

Trading Information
Minimum Order Quantity:
1 Kilogram
Price:
Negotiable
Packaging Details:
25KG / Iron Drum
Delivery Time:
5-7 Days
Payment Terms:
T/T
Supply Ability:
100 Tons per Month
Product Description

RTV2 Tin Cure (Condensation Cure) Liquid Silicone Rubber — HN-620 A/B

HN-620 A/B is a two-component tin cure (condensation cure) liquid silicone rubber that vulcanizes at room temperature. Mixed at a 100:2 ratio, it delivers excellent fluidity, low linear shrinkage (≤0.2%) and high tear strength — ideal for reproducing fine details in precast concrete, decorative concrete, architectural casting and industrial mold making.

Key Features

  • Condensation cure (tin cure) RTV-2 system, 100:2 mix ratio, room temperature vulcanizing
  • Low linear shrinkage (≤0.2%) for precise, dimensionally stable molds
  • High tear strength (19.8–24.3 kN/m) — withstands repeated demolding cycles
  • High elongation (600–720%) and good fluidity for easy pouring / brushing
  • Excellent reproduction of fine surface detail for precast & decorative concrete molds
  • Transparent / translucent, environmentally friendly; ROHS & SGS certified

Technical Specifications

PropertyValue
ModelHN-620 A/B / HN-630 A/B
Mixing Ratio (A:B)100:2
Viscosity18,000–25,000 cps
Hardness20 / 30 Shore A
Tensile Strength3.1–4.1 MPa
Tear Strength19.8–24.3 kN/m
Elongation600–720%
Linear Shrinkage≤0.2%
ColorTransparent / White
Operating Time30–40 minutes
Curing Time3–4 hours at room temperature

Applications

  • Precast concrete & decorative concrete molds
  • Architectural casting and construction molds
  • Foundry patterns, prototype and industrial mold making
  • Gypsum, plaster and resin crafts; soap and food molds

Trade Information

  • Place of Origin: Guangdong, China
  • Certification: ROHS, SGS
  • Minimum Order Quantity: 1 kilogram
  • Packaging: 25KG / iron drum
  • Delivery Time: 5–7 days
  • Payment Terms: T/T
  • Price: Negotiable — contact us for wholesale and OEM quotations.