Import Flex Seal — Buy in Bulk from Supplier in China

Flex seal is a rubberized liquid elastomer coating designed to form a flexible, waterproof barrier on surfaces prone to leaks. The product, as supplied by Ninghai Jinshun International Trade Co., Ltd, is formulated for application via spray, brush, or roller and adheres to metal, wood, concrete, plastic, and rubber. It cures to a durable, stretchable film that resists cracking under thermal expansion and contraction. The formulation contains no solvents that degrade common substrates, making it suitable for both indoor and outdoor use.

The base material is a proprietary blend of synthetic rubber and polymers, typical of industrial-grade sealants used in construction and maintenance. It exhibits a tensile strength of approximately 1.8 MPa and elongation at break of 450%, consistent with standard performance benchmarks for elastomeric sealants. The product is not classified as a paint or adhesive but functions as a liquid membrane that fills gaps up to 5 mm wide. It remains flexible at temperatures ranging from -40°C to 90°C, aligning with typical performance ranges for weatherproof sealants in temperate and subtropical climates.

This sealant is commonly purchased by contractors for roof repairs, gutter sealing, pipe joint encapsulation, and automotive underbody protection. Buyers include maintenance departments in logistics, manufacturing, and property management. Packaging is standard in 12-ounce aerosol cans or 1-gallon pails, with bulk orders available in 5-gallon drums. Minimum order quantities are negotiable, and delivery terms are typically FOB Ningbo port. The product does not require special storage beyond dry conditions and moderate temperatures.

Ninghai Jinshun International Trade Co., Ltd is an export-focused trading company based in Ningbo, Zhejiang, China. The supplier operates from a commercial address in Huating Garden and is registered as an importer with verified export experience. The listing indicates no manufacturing capability, and the company acts as a distributor or consolidator of sealant products sourced from third-party producers. There is no public data on workforce size, annual turnover, or factory certifications.

The supplier's trust tier is listed as 'harbor', indicating compliance with basic export documentation and shipping protocols. Response rate and average response time are not available, suggesting limited active engagement on the platform. The company does not claim ownership of the product formulation, nor does it list any in-house testing facilities. Buyers should request product test reports directly from the supplier to verify batch consistency and performance claims.