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Home > Polyurethane Sealant >  SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
SY-521
Usage and Transportation: Sealing maintenance for parts such as vehicle body sheet metal, weld seams, compartment seals, vehicle roofs, mechanical components, air conditioning duct interfaces, etc., as well as applications in scenarios like glass curtain walls, ceramic sanitary ware, engineering decoration, kitchen waterproofing, etc. Transportation: Moisture-proof, rain-proof, sun-proof, heat-proof. Keep away from heat sources and handle with care. Do not squeeze or collide.
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Specification
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FAQ


SY521 Technical indicators
ItemExperimental projectNumerical value
1AppearanceThe cream-like substance is fineand even, and comes in colors such as transparent, bright black and porcelain white.
2Tack-free time
(23 °C; 50 % RH)		30min
3Extrudability
 (Ø 3mm / 3.0 bar / 23°C)		≥125 g/min
4Shear strength1.5MPa
5Hardness Shore A 54
6Tensile strength3.2MPa
7Cure rate / curing speed
(23 °C; 50 % RH)		≥1.2 mm/24h
8ColourBlack 、 white、 transparency


Do you offer free samples?

Samples are available at a small fee, refundable on your first order. Shipping cost is borne by the buyer.


What payment methods do you accept?

T/T, PayPal,  and Alibaba Trade Assurance for secure transactions.


Can you customize packaging?

Yes, the minimum order quantity for custom packaging is 500 cartons.


Do you support OEM/ODM?

Yes. Share your design or concept, and our team will create samples for approval.


What’s your MOQ?

Our standard MOQ is 100 cartons, but we can discuss flexibility based on product type and long-term cooperation.


What’s the delivery time?

Standard production takes 15-30 days. Express shipping (e.g., DHL) takes 5-7 days; sea freight 20-40 days (port-dependent).


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Design and Development
Shuangyuan offers impressive custom design options - based on your ideas and input, our R&D team is committed to creating a late buy efficient design that will benefit your end users
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Get the best quality parts and materials for your tools from Shuangyuan for high quality manufacturing, and our OEM services can help you build your brand and grow your business.
1
Silicone Sealant Manufacturing
Shuangyuan has many years of experience in Silicone Sealant manufacturing - we have the perfect system for cost control, efficiency improvement, and quality control delivery in our factories
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Shuangyuan believes in high quality products for long-term cooperation - we use various quality inspection processes during the production stage to ensure quality
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Shuangyuan offers a 3-year warranty on all tooling solutions, because we believe that providing our customers with after-sales service provides longer and more stable cooperation.
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