1. About US
Dongguan Rongxin Silicone Technology Co.,Ltd is founded in 1999.and located in Tangxia,Dongguan.We
are a polymer material manufacturer who is integrated in R&D,production and sales.And we have set up
Shenzhen Rongxingda Polymer Material Co.,Ltd in 2012.
Our products are with high quality and have gotten ISO,ROHS,REACH and SGS MSDS etc certificated.our
customers are from all over the world.Specially,in America,Europe,and Southeast Asia,many customers are
keeping a long term cooperation with us.
Condensation molding silicone rubber
Condensation tin cure silicones are two-component materials which cure at room temperature (RTV) to flexible, high
tear-strength rubbers. It can be poured onto models or they can be made brush-able by adding a thixotropic additive.
Characteristical:
• Easy to use
• Use tin catalyst
• Reproduce intricate details
• Resist tearing with repeated use

2. • Provide good resistance to most chemicals
• Offer variable cure times at room temperature
• Flexible to reduce de-molding and stress problems
• High duplication times(e.g.800-1000times for gypsum products),
• High resistance to high temperature and aging(resist -60 to 200℃)
Application:
• Artificial stone products molding,Wax casting
• Lighting & candles crafts,stationery gifts,crafts industry
• Making molds for gypsum,GRC,concrete,resin products etc
• Casting for Statue,Buddha,Christmas ornaments,sculptures,
figures etc
• Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin
• Decoration building mold making (cornice,column, balustrade, ceiling, pedestals,
fountains, mantels, wall ornament, planter,furniture decorative etc.)
Take a closer look at your Cure options
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
Tin-4
clear 100:2 60-70mins 12 hours
clear 100:3 40-45mins 5-6 hours
clear 100:4 20-25mins 3-4 hours
clear 100:5 10-15mins 1-2 hours
Notice:
All the parameters and catalyst can adjust according to customer`s specific requirements.
Typical properties
Characteristics before curing Characteristics after curing
Item NO. Appearance Viscosity
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-M05 Off-White 24000±2000 5±2 28±4 2.2-2.4 600 0.3
RX-810 White 24000±2000 10±2 30±4 2.5-2.7 550 0.3
RX-820 White 24000±2000 20±2 40±4 3.5-3.6 480 0.3
RX-830 White 24000±2000 30±2 46±4 3.6-3.8 450 0.3
RX-840 Off-White 36000±2000 40±2 35±4 4.2-4.5 380 0.3
RX-4511 Off-White 33000±2000 13±2 42±4 3.5-3.6 580 0.3
RX-4512 Off-White 33000±2000 20±2 48±4 3.8-4.0 550 0.3
RX-4514 Off-White 36000±2000 25±2 50±4 4.2-4.4 500 0.3
RX-4541 Off-White 36000±2000 35±2 48±4 4.8-5.0 400 0.3
RX-903 Translucent 22000±2000 36±2 48±4 4.3-4.5 400 0.3
RX-903-1 Translucent 22000±2000 25±2 42±4 3.5-3.8 380 0.3
RX-L20 Off-White 6000±1000 20±2 30±2 2.8-3.0 420 0.3
RX-L30 Off-White 8000±1000 30±2 22±4 3.2-3.4 380 0.3

3. Package:
Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and 200kg/drum.
Part B(catalyst):40g/bottle, 0.2kg/bottle,1kg/bottle , and 2kg/bottle.
Platinum molding silicone rubber
Addition platinum cure molding silicone rubber is a
two component, which are easy to use platinum catalyst mixed
1A:1B or 10A:1B by weight and vulcanizes at room
temperature.
Characteristical:
• Easy to use
• Almost nil shrinkage
• Use platinum catalyst
• Excellent non-stick effect
• High degree of precision in reproduction
• High dimensional stability over time and non-deformability
• Food grade silicone (environmental,odorless and nontoxic)
• High resistance to high temperature and aging(resist -60 to 200℃)
• High chemical resistance to aggressive components of some
types of resins
• Good tear strength (this feature ensures higher resistance to
wearing and shearing)

4. Application:
• PU resin casting
• General mold making
• GRC and concrete molding
• Superior manual mold design
• Food grade molding application
• Rapid prototyping(urethane casting/silicone tooling/vacuum casting)
Curing agent
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time min De-mold Time
P10 clear 10:1 60mins 6-8 hours
P11 clear 1：1 40-45mins 6-8 hours
Note:Working time 15-20 min,cured time 2hours can adjust for each item
Package:
Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and 200kg/drum.
Part B(catalyst):40g/bottle, 0.2kg/bottle,1kg/bottle , and 2kg/bottle.
Typical properties
Platinum Addition Molding Silicone Rubber
Characteristics before curing Characteristics after curing
Item NO. Appearance Viscosity
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RX-1310-
30
Transparent 65000±1000 30±2 46±4 5.0-5.3 400 0.1
RX-1310-
40
Transparent 80000±1000 40±2 50±4 5.5-6.0 330 0.1
RX-1500 Translucent 4000±1000 0±2 9±2 2.5-3.0 500 0.1
RX-1510 Translucent 5000±1000 10±2 18±2 2.5-3.0 550 0.1
RX-1520 Translucent 5000±1000 20±2 22±2 3.0-3.3 480 0.1
RX-1530 Translucent 10000±1000 30±2 26±2 3.5-3.8 450 0.1
RX-1540 Translucent 20000±1000 40±2 42±2 4.0-4.1 400 0.1

5. Life casting silicone rubber
RTV-2 life casting silicone rubber is generally named as
two-part silicone rubber that vulcanizes at room temperature.
Part A is a flow able liquid ,part B is the catalyst.
Characteristical:
• Easy to use
• Use platinum catalyst
• High degree of precision in reproduction
• High transparency,almost non shrinkage
• Good heat stability and weatherability(resist -60 to 250℃)
• Low compression set,grat stability and ability to resist extreme temperatures of heat and cold.
Application:
• Paster
• Traction
• Sex toys
• Body organs
• Shoulder pads
• Body breast enhancers
• Other soft silicone products
Typical properties
Characteristical before curing Characteristical after curing
Item NO. Appearance Viscosity
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RTV1205 translucent 4000±1000 5±2 7±2 ≧4 410 ≤0.1
RTV1208 translucent 5000±1000 8±2 10±2 ≧4.5 420 ≤0.1
RTV1210 translucent 6000±1000 10±2 12±2 ≧5.0 510 ≤0.1
RTV1212 translucent 6000±1000 12±2 12±2 ≧5.0 520 ≤0.1
RTV1220 translucent 80000±1000 20±2 14±2 ≧6.0 520 ≤0.1
Curing agent
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
T02 clear 1：1 30-40mins 4-6hrs
T02 clear 1：1 50-60mins 8-10hrs
T02 clear 1：1 90mins 24hrs

6. Shoe soles silicone rubber
Shoe soles silicone rubber is generally named as
two-part silicone rubber that vulcanizes at room temperature.
Part A is a flow able liquid,part B is the catalyst.
Characteristical:
• Easy to use
• Use platinum catalyst
• Cures at room temperature within 3-4 hours
• Good tensile and tear strength,low shrinkage
• Good resistance to weather,temperature,aging,acid
• An exceptional fluidity and good operability,easy to remold
Application:
• shoe molds
• sand casting
• sole sampling
• plaster models
• simple products
• products with non-complex patterns
Typical properties
Characteristical before curing Characteristical after curing
Item NO. Appearance Viscosity
Mpa.s
Hardness
Shore A
Tear strength
(KN/m)
Tensile
Strength(Mpa)
Elongation
break (%)
Linear
Shrinkage(%)
RS17 white 11000±2000 17±2 10±2 ≧1.8 250 ≤0.2
RS33 white 20000±2000 33±2 5±2 ≧1.0 120 ≤0.2
Curing agent
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
T01 clear 100：2 30-40mins 14-15hrs
T01 clear 100：3 20-30mins 9-10hrs
T01 clear 100：4 10-20mins 4-5hrs
Package:
Part A(silicone):1kg/bottle,5kg/drum,20kg/drum,25kg/drum,and 200kg/drum.
Part B(catalyst):1kg/bottle,and 2kg/bottle.

7. Condensation electronic potting silicone rubber
Tin cure electronic potting silicone rubber is a two-component materials which cure at room temperature (RTV) (heating
curing)and molding organic silicone materials.
According to 100:10 (weight ratio or the volume in the thorough mixing proportion of A and B two components, products will
be in A certain time, form of the elasticity of curing buffer material.
Applications:
Suitable for general potting material for power supplies, connectors, sensors, industrial controls and transformers.
Features:
•UL 94V-0
• water proof
•Good flow-ability
•inflaming retarding
•Moderate thermal conductivity
•Room temperature or heat accelerated cure
Composition:
• 10 to 1 Mix Ratio
• Tin curing agent
• Polydimethylsil
Typical properties
Before
curing
Item NO. 3300 3303 3305
Appearance transparent black White
Viscosity Mpa.s part A 2000 2500 2500
part B 20 20 20
Density(g/cm3) part A 1.02 1.02 1.02
part B 0.86 0.90 0.90
After
curing
Hardness Shore A 20-23 25-30 25-30
Elongation break% 150 150 150
Tear strength(KN/m) 1.8 1.8 1.8
Tensile Strength(Mpa) 0.5-1.5 0.5-1.5 0.5-1.5
Volume resistivity/Ω.cm ≥1014
≥1014
≥1014
Break down voltage(kv/mm) ≥15 ≥15 ≥15
Specific inductive capacity(50Hz) 2.7-3.3 2.7-3.3 2.7-3.3
Dielectric loss factor(50Hz) ≤0.02 ≤0.02 ≤0.02
Thermal conductivity ≥0.2 ≥0.6 ≥0.6

8. Curing agent
Package:
22kg/drum(20kg Part A+ 2kg Part B)
Addition electronic potting silicone rubber
Addition platinum cure electronic potting silicone rubber, also called addition-cure silicones, are
two-component materials, a room temperature/heating curing and molding organic silicone materials.
According to 1:1 (weight ratio or the volume in the thorough mixing proportion of A and B two components, products will be
in A certain time, form of the elasticity of curing buffer material.
Applications:
•Suitable for general potting material for power
supplies, connectors, sensors, industrial controls
and transformers.
Features:
•UL 94V-0
• water proof
•Good flowability
•inflaming retarding
•Moderate thermal conductivity
•Room temperature or heat accelerated cure
Benefits:
• Rapid, versatile cure processing controlled by temperature
• Can be considered for uses requiring added flame resistance
Composition:
• 1 to 1 Mix Ratio
• Polydimethylsiloxane
• platinum curing agent
Typical properties
Working and Cure Times at Room
Temperature (25°C)
Curing Agent
Appearance
Base/curing agent
Mixing Ratio,
By Weight
Pot life Time
mins
De-mold Time
T02 clear 10：1 30-40mins 4-6hrs
T02 clear 10：1 50-60mins 8-10hrs

9. Packaging:
22kg/drum(20kg Part A+ 2kg Part B)
High clarity and high strength LSR for injection molding
Liquid silicone rubber(LSR) for Injection molding is a two-part high purity addition cured silicone specifically designed for
liquid injection molding,which can be fully automatically injection molded without secondary processing.They are platinum
curing and vulcanize under heat and pressure.
Characteristical:
 The elastomer is supplied as a two-part kit (Part A and Part B),equal portions (1:1 by weight) of which very easy to
operate and deal for manufacturing parts in large volume, achieving low unit cost but super quality production.
 Low compression settled, great stability and ability to resist extreme temperatures of heat and cold.
 Excellent tear strength(≥35KN/m),High transparency,almost non shrinkage,Good resilience,Anti-yellowing
 Good heat stability and weatherability(temperature resistant range of -60℃ to 250℃)
 Comply with USA CFR21.Part.177.2600 and Chapter 4.9Test Standards for Volatile Compound of EN14350-2 and EU
RoHS Standard
Application:
LSR for injection molding are mainly used for fabricating components stress, medical device and parts,baby care
products(such as Baby nipples,pacifier,toothbrush),cake mold,household products and other food grade injection
Before
curing
Item NO. 1300 1303 1305
Appearance transparent grey White
Viscosity Mpa.s part A 1500 2800 2800
part B 1500 3200 3200
Density(g/cm3) part A 0.95-0.98 1.31-1.35 1.31-1.35
part B 0.95-0.98 1.33-1.36 1.33-1.36
Ratio(part A+part B) 1:1 1:1 1:1
Pot life at 25℃mins 60 60 60
De-molding time at 25℃ (H) 24 24 24
De-molding time at 50℃ (H) 4-6 4-6 4-6
De-molding time at 100℃ (H) 1-2 1-2 1-2
De-molding time at 150℃ (H) 0.5-1 0.5-1 0.5-1
After
curing
Hardness Shore A 30-40 30-40 30-40
Elongation break% 50-60 50-60 50-60
Tear strength(KN/m) 1.8 1.8 1.8
Tensile Strength(Mpa) 0.5-1.5 0.5-1.5 0.5-1.5
Volume resistivity/Ω.cm ≥1014
≥1014
≥1014
Break down voltage(kv/mm) ≥15 ≥15 ≥15
Specific inductive capacity(50Hz) 2.7-3.3 2.7-3.3 2.7-3.3
Dielectric loss factor(50Hz) ≤0.02 ≤0.02 ≤0.02
Thermal conductivity ≥0.3 ≥0.8 ≥0.8

10. products,diviing device device,adult Soother,iPad /iPhone case,insulation O-ring,etc.
Properties Data
Notice:
 After the component A and component B are mixed under the temperature of 20℃,the effective operating time is 5
days in sealing status,The effective operating time will shorten in case of rising temperature.
 The viscosity,hardness and appearance/color of above products can be adjusted according to customer’s specific
requirements.
Packaging:
The general package of LSR are are 20kg or 200kg per barrel.
Polyurethane Rubber
Polyurethane rubber that are use to create flexible molds and tools for casting, forming, gypsum,concrete,
and texturing concrete,especially well for casting pigmented/colored concrete mold. It is a variety of mold making and
industrial applications with faster cured feature and 1:1 mixing ratio.
Advantage:
 Limitless design options for creating custom shapes, colors and textures.
 Make your stamped concrete look exactly like brick, flagstone, river rock, wood and more.
 Project Versatility - stamp concrete indoors or out to beautify courtyards, pool decks, driveways, stairways, patios
and more.
 Lower labor and material costs
 Time Savings – Complete any project in a fraction of the time vs. laying brick, stone, etc.
 Time Savings – Complete any project in a fraction of the time vs. laying brick, stone, etc.
Our softer Polyurethane Rubbers are great for products with deep undercuts and very irregular surfaces.Veneer stone,
decorative precast, and countertop edging are popular applications. Available in hardnesses ranging from Shore A10 to
A40.
Our firmer Polyurethane Rubbers are great for products with fine detail and minimal undercuts. Popular uses include
concrete stamps, wet-cast pavers and slabs,and countertop sink plugs. Available in hardnesses ranging from Shore A50 to
Before
curing
Item NO. LSR30 LSR40 LSR50
Appearance transparent transparent transparent
Viscosity Mpa.s part A 700 700 1000
part B 700 700 1000
Ratio(part A+part B) 1:1 1:1 1:1
After
curing
Hardness Shore A 30 40 50
Elongation break% 600 600 450
Tear strength(KN/m) 28 38 43
Tensile Strength(Mpa) 6.0 6.0 8.5
Density(g/cm3
) 1.07 1.07 1.12

11. A60.Especially for no figure and undercuts,
available in hardness shore A60.
Typical properties
Package:
Per Kilogram:5kg/plastic drum,20kg/plastic drum,25kg/iron drum,27kg/iron drum,200kg/iron drum
Per Carton: 5kg drum, 20kg/carton
Per Pallet:20kg/carton,27carton/pallet ;25kg/drum,18 barrel or 24 barrel/pallet;200kg/drum,4 barrel/pallet
Notice:
 Shelf life of product is reduced after opening. Remaining product should be used as soon as possible.Immediately
replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product.
 A release agent is necessary to facilitate de-molding when casting into or over most surfaces.
 Liquid urethanes are moisture sensitive and will absorb atmospheric moisture.
 Mixing tools and containers should be clean and made of metal or plastic. Materials should be stored and used in a
warm environment (73°F/23°C).
 Specification can according to customer’s specific requirements adjust.
Easy Molding Silicone Putty
RX silicone putty product is a new silicone compounds (platinum catalyst),and strong ,flexible mold making material.This
Item NO. U10 U20 U30 U40 U50 U60
Appearance White White White White White White
A:B Mix Ratio 1:2 1:2 1:2 1:2 1:2 1:2
Pot life time(mins) 30 30 30 30 30 30
Hardness Shore A 10 20 30 40 50 60
Viscosity(cpa.s) 1000-2000 1000-2000 1000-2000 1000-2000 1000-2000 1000-2000
De-molding time(hrs) 16 16 16 16 16 16
Tear strength(Pli) 38 60 78 82 102 136
Tensile Strength(Psi) 200 200 500 522 588 880
Elongation break (%) 1000 1000 1000 660 400 480
Shrinkage(in.in) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001

12. putty has a working time of 4-20 minutes, cures in 20-60 minutes and exhibits no shrinkage after curing. No releasing agent
is necessary.
Silicone Putty Products is applied by hand to a variety of surfaces, is mixed in equal amounts (1A:1B) by volume and is
categorized as food-grade safe so it can be used in some baking applications (can be heated up to 400F/204C)
Application:
Plaster, plaster mixes, concrete, wax, soap, low-melt metals, chocolate, ice cubes, resins and air dry clays and quick
simple flexible rubber molds.
Advantages:
 Ideal for small molds, excellent detail from original
 Strong, flexible, reusable molds
 Self releasing, no mold release agent required for most applications.
 FDA Compliant - Food Grade
 For use in jewelry making including pendants, charms and earrings.
 High heat range, up to 400 degrees Fahrenheit.
 No shrinkage.
Technical Data:
Item NO. Appearance Mix ratio Working
time(min)
De-molding
time(min)
60-120℃
RX-P04 white 1:1 4 20-30 5min
RX-P20 white 1:1 20 60 10min
Instructions for use:
This product is mixed by hand. If you choose to wear gloves, wear vinyl gloves only.
Latex gloves will inhibit the cure of the rubber.
 Simply measure equal parts by volume of part A and part B into two separate equal sized balls.
 Knead part A and part B together with your hands until uniform in color (light blue). The heat from your hands will help
activate the product. Once the color is uniform, you are ready to begin your mold
 Press the kneaded mixture onto the surface of the object you wish to replicate
 Press firmly to ensure putty covers all surface areas. If covering a large surface, you may work in small sections and in
batches
 To eliminate air bubbles in your mold, begin pressing in the lowest surface points working outward to high points
Shelf life & Storage:
500g/1kg bottle package.
12 months in unopened containers stored at roon temperature(25℃)
Notice:
Do not eat. KEEP OUT OF REACH OF SMALL CHILDREN. Adult supervision recommended. Ingredients may cause eye
irritation, skin redness, and sensitization. If skin redness develops, discontinue use and wash affected area with soap and

13. water. If material gets into eyes, wash eyes with plenty of water.
Polyurethane Plastic/Polyurethane Resin for casting
RX-PU70-80 is a low viscosity casting that are beige or white color with ratio 1:1,polyurethane liquid casting plastic that has
a 2-3 minutes working time and 10 minutes de-mold time under the temperature 25℃.RX-PU70-80 are excellent for casting
decorative objects,prototypes,scale models, sculptural reproductions, duplicate masters.Production parts, fixtures, tools
and more.
Features:
1.Tough,non-brittle
2.1:1 mix by weight
3.Can be machined,drilled,sanded
4.Variable working time.
5.Easy mix and pour
Technical overview:
Preparation:
1.Safety materials should be stored and used in a warm environment(23℃).These products have a limited shelf life and
should be used as soon as possible.All Liquids urethanes are moisture sensitive and will be absorb atmospheric moisture.
2.Mixing tools and containers should be clean and made of metal,lass or plastic.Mixing should be done in a well-ventilated
area.Wear safety glasses,long sleeves and rubber gloves to minimize contamination risk.
Important:
Shelf life of products is reduced after opening,.Remaining products should be used as soon as possible.Immediately
replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product.
Notice:
Cured reaction will rises the temperature, avoid touching.Avoid splashing into water.
Item
NO.
Appeara
nce
Viscosity
Mpa.s
Hardnes
s
Shore D
Tear
strength
(KN/m)
Tensile
Strength(M
pa)
Elongati
on break
(%)
Linear
Shrinkage
(%)
Working
Time(min)
De-molding
Time(min)
RX-PU
70
Beige/wh
ite
50-100 70 700 20 500 ≤0.1 3 30
RX-PU
80
Beige/wh
ite
50-100 80 700 20 500 ≤0.1 3 30