Premium 310ml Waterproof Silicone Sealant for Windows and Pools
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Product Highlights
- Superior Weather Resistance: Resists UV, rain, snow, and extreme temperatures from -30C to +120C.
- Room Temperature Curing: One-component formula cures quickly at room temperature with atmospheric moisture.
- No Primer Required: Applies directly to clean, dry uncoated glass, ceramics, and glazing surfaces.
- High Extrusion Rate: Features 260g/min extrusion rate for efficient vertical joint and bottom seal application.
- Flexible & Durable: Becomes a permanently flexible sealing material with 95% elastic recovery rate.
- Free Samples Available: Free samples offered with recommendations based on specific client requirements.
- OEM & Private Label: Offers OEM/private label services with free design and small MOQ options.
- Multi-Color Options: Available in White, Clear, Black, and other customized colors.
Product Attributes
- Customization
- Available
- Application
- Construction, Footwear & Leather
- Color
- White, Clear, Black, Others
- Model NO.
- RT-668
- Composition
- Organic Material
- Material
- Silicone
- Packaging
- 24PCS
- Flexibility
- Super Adhesive and Flexibility
- Bubble
- No
- Shelf Life
- One Year
- Sample
- Free
- Transport Package
- Carton
- Trademark
- OEM
- Origin
- China
- Package Size
- 8.00cm * 8.00cm * 30.00cm
- Package Gross Weight
- 1.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description

RUNTAI ADVANCED SILICONE GLASS SEALANT
Overview
It cures at room temperature quickly by the action with atmosphere moisture to become a permanently flexible and durable sealing material.
Its technological properties enable RT-668 to have a high
extrusion rate, and to be used for vertical joints and bottom seals.
RT-668 exhibits superior weather resistance, UV radiation,rain, snow and other characteristics in the temperature range from -30ºCto+120ºC.
Key Features
-One part, no pollution, room temperature fastcuring.
-No primer needed on the clean and dry uncoated glass, ceramics, and glazing & painting surfaces.
-Excellent weather ability and stability, high & low temperature resistance performance, long life.
Application
-Joint sealing of door and window.
-Assembly for shop windows, display cases, display boards.
-It suits for plumbing fixtures, drains, roof and gutters.
-Sealing of air conditioning pipe.
-Joint sealing ofpower pipeline.
-It can be used for ship maintenance.
-Universal seal of self assembly.
Storage
-Storage period is 12 months from the date of manufacture when stored at dry and airy, below 27ºC conditions.
Processing
-The substrate to be in contact with the sealant must be clean, dry and free of all loose materials, dust, dirt, rust, oil, and
other contaminants. Extrude the sealant with caulking gun to the working area and trim it before sealant cured. Do not touch the
trimmed area again o avoid damage or
aesthetic appearance.
Use Limitations
RT-668 silicone sealant should not be applied in the following conditions:
-To all surfaces that bleed oils, plasticizers or solvents, and some uncured or sulfurized rubber.
-To all surfaces which could be reacted with acetic acid.
-To the unventilated space or the surface which can touch the food or water directly.
-When the surface's temperature is below 4ºC or above40ºC .
-To materials contained copper or copper alloy, painted surface, which may cause paint cracking or paint stripping.
-To the surfaces with lime power, concrete or sand again.
-For structural use or aquarium.
PRODUCT PARAMETERS
Before curing |
Type Of Silicone Sealant | acetic |
| Color | clear, black, white | |
| Proportion (g/cm3) | 0.97 | |
| Extrusion(g/min,23ºC) | 260 | |
| Resistance To Vertical Flow(mm) | 0 | |
In the curing |
Tack Free Time(min) | 9 |
| Curing Rate(mm/ 1day) | 3 | |
| Curing Rate(mm/3day) | 6.5 | |
| Curing Rate(mm/7day) | 9 | |
| Application Temperature(ºC) | +5~+40 | |
After cured |
Elastic Recovery Rate | 95% |
| Hardness (Shore A) | 20 | |
| Joint Movement Capability | 20% | |
| Working Temperature(ºC) | -30~+120 | |
| Mechanical properties of a 2mm thick film | Modulus 100% extension(Mpa) | 0.43 |
| Tensile Strength (Mpa) | 2 | |
| Elongation At Break, % | 500 | |
| Mechanical properties of H-type specimens |
Modulus 60% extension(Mpa) | 0.4 |
| Tensile Strength (Mpa) | 0.7 | |
| Elongation At Break, % | 150 |





Q1: Are you manufacturer?
A1: Yes, we are manufacturer. We have 2 factories which around 100,000 square meter,our production capacity is 20 containers per day, on time delivery is supported.
Q2: Do you provide OEM/private label service?
A2: Yes, We offer OEM/private label services. Additionally, we provide free design and small MOQ for private label sealants.
Q3: What other products do you have?
A3: RUNTAI serves one stop solution of sealants & adhesives, including: PU Foam, Silicone Sealant, Acrylic Sealant, PU Sealant, MS Sealant, Spray Paint, Water Based Adhesive, Zero Nail Construction Adhesive, Marble Glue & Epoxy Resin.
Q4: Why do we choose you?
A4: With 2 factories which are around 100,000 square meter,RUNTAI is called one of the biggest manufacturers in China. Our products are fully comply with American & European standards. We supply to fortune TOP 500 enterprises in more than 80 countries, which is the Top3 customized Export Volume in China.
Q5: Can i get a free sample?
A5: We offer free samples for clients. Please feel free to contact us for more details , we can recommend the suitable samples according to your requirement.
Q6: What is benefit to be your distributors?
A6: 1. We support our distributor to become stronger.
2. We provide technical Know-How on selling.
3. We train our distributor's sales team.
4. We train our distributor's dealers.
5. We support you to become better.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASI254504". Items marked "" are certified.
Company Profile
Jiangsu Runtai Sealant industry Co., Ltd, established in 2001, is dedicated to becoming the top partner inthe sealant industry, Guided by the principles of credit management, brand reputation. Ecologicaenvironmental protection, and offering high - quality products at competitive prices, we strive forexcellence.
Situated in Zhangiiagang, Jiangsu Province, we are a professional enterprise specializing in the productionof environmentally friendly decorative building materials. Our main products include a wide range ofOEMcolor silicone sealants, polysulfide sealants, butyl sealants, and more. These products are extensively applied in construction engineering, curtain wall structural assembly andsealing, insulating glass processing, as well as indoor and outdoor decoration. Our company covers an areaof 50, 000 square long - term partnerships with overseas customers, Commited to continuous innovation and developmentand adhering to the principles of integrity and quality, we aim to become a world - class professionasealant manufacturer.
Runtai serves one stop solution of sealants & adhesives, including: PUFoam, Silicone Sealant, Acrylic Sealant, PU Sealant, MS Sealant, Spray Paint, Water Based Adhesive, Zero Nail Construction Adhesive, Marble Glue & EpoxyResin.
We offer OEM/private label services. Additionally, we provide freedesign and small MOQ for private label sealants.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Zhangqing Village, Sigang, Yangshe Town (No. 100, Sizha Road), Suzhou, Jiangsu, China
-
Plant Area
- 13315 square meters
-
Number of Employees
- 60
-
Registered Capital
- 28,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 1 PC
-
Supply Chain Partners
- 60
Our Production Capability & Technical Expertise
-
Main Products
- Silicone Sealant, Glass Sealant, Sealant Manufacturers, Building Sealant
-
Production Lines
- 1
-
Production Machines
- Auto Production Line
-
QA/QC inspectors
- 4 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 5 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2008-07-23
-
Export Year
- 10 Years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- Yes
FAQ
- Are you manufacturer?
- Yes, we are manufacturer. We have 2 factories which around 100,000 square meter,our production capacity is 20 containers per day, on time delivery is supported.
- Do you provide OEM/private label service?
- Yes, We offer OEM/private label services. Additionally, we provide free design and small MOQ for private label sealants.
- What other products do you have?
- RUNTAI serves one stop solution of sealants & adhesives, including: PU Foam, Silicone Sealant, Acrylic Sealant, PU Sealant, MS Sealant, Spray Paint, Water Based Adhesive, Zero Nail Construction Adhesive, Marble Glue & Epoxy Resin.
- Why do we choose you?
- With 2 factories which are around 100,000 square meter,RUNTAI is called one of the biggest manufacturers in China. Our products are fully comply with American & European standards. We supply to fortune TOP 500 enterprises in more than 80 countries, which is the Top3 customized Export Volume in China.
- Can i get a free sample?
- We offer free samples for clients. Please feel free to contact us for more details , we can recommend the suitable samples according to your requirement.
- What is benefit to be your distributors?
- 1. We support our distributor to become stronger. 2. We provide technical Know-How on selling. 3. We train our distributor's sales team. 4. We train our distributor's dealers. 5. We support you to become better.
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