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Shower Seals Suppliers & Manufacturer
Manufacturer of Shower Door Seal Since 1993
As a Professional Shower Door Seal Strips Manufacturer, We Focus On:
Magnetic Sealing | Glass Sealing Strip | Alloy Sealing Strip
Certifications
With uncompromising quality and a commitment to excellence, we have earned the trust of customers worldwide for over two decades. Our long-standing partnerships with leading global bathroom brands, distributors, and select retailers are built on reliability, consistency, and shared values. All our products fully comply with strict international market standards and have successfully passed multiple certifications—ensuring they meet the high expectations of customers around the world.
why choose us
As a professional supplier of show door seal, we are committed to providing customers with the most satisfactory services and solutions.
ODM & OEM Service
We offer standard products and accept customised requirements.
Low MOQ
We accept low MOQ to meet the needs of customers for pre-market testing.
Specialized Advice
Expert advice on the most appropriate choice of product materials, packaging methods and market trends for different applications.
Fast & Efficient Service
30 years of professional show door seal export and service team, fast response, fast problem solving, provide customers with a variety of market solutions.
Extensive Logistics Solutions
We Can Provide FOB/CIF/CFR/DDR Service For Client, Especially Who Are Just begin to do E-commerce, Also Solve Your Customs Clearance Problem.
Flexible Payment Methods
TT, LC, DP and others payment, etc. we think payment is not fixed, we can negotiate according to the time situation of the order.
Our Products & Applications
Glass Sealing Strip
Alloy Sealing Strip
Magnetic Sealing Strip
our perfect seal starts here – let’s build something durable together!
Our specialized production processes
Step 1
Granulation
High-purity polymer compounds are meticulously blended with UV stabilizers and color masterbatches in our automated granulation system, guaranteeing material consistency and longevity.
Step 2
Molding
Advanced injection molding machines shape components with ±0.1mm tolerance, achieving seamless structural integrity for hinges, end caps, and connectors.
Step 3
Extrusion
Temperature-controlled extrusion lines produce continuous profiles with anti-slip textures and optimized density, tailored to your specified hardness (Shore A 60°-90° adjustable).
Step 4
Quality Inspection
Every meter undergoes:
Laser measurement (dimensional accuracy) Pressure/water resistance tests (simulating 10+ years of use) Visual inspection (surface perfection)
Step 5
Packing
Automated PVC coil wrapping + shock-absorbent carton packaging prevents transit damage.
Step 6
Shipping
Pre-allocated logistics slots ensure on-time global delivery (FOB/CIF/DDP options), supported by real-time shipment updates.
who we are
Tongxiang Tiansheng Plastic Products Co., Ltd., founded in 1993, has been deeply involved in plastic extrusion and injection molding for 30 years, specializing in shower room accessories. With excellent technology and high-end equipment, it is at the forefront of the industry, has obtained ISO9001 certification, and has cooperated with top bathroom brands for more than 20 years, and its products are exported to all over the world. The company adheres to innovation and growth, the pursuit of excellence, and invites us to learn from the glory and future.
30 years
experience
7,000㎡
Plant area
200,000 sets
Monthly production
Professional & Efficient factory
We operate a modern 7,000-square-meter manufacturing facility and are supported by a team of hundreds of skilled professionals in production, sales, and R&D. With strong production capacity and an efficient operational system, we ensure both quality and speed. Our strict quality control standards and reliable delivery timelines have earned the long-term trust and partnership of customers worldwide, making us a dependable and preferred supplier in the global market.
Ready to Elevate Your Bathroom Solutions?
Strict Product Quality Testing
Dedicated to quality, we ensure that each product is subjected to strict laboratory testing before delivery, guaranteeing reliability and performance in every application.
UV aging test
We understand that quality and longevity are critical for bathroom accessories. That’s why our shower door seals and bathroom threshold profiles undergo rigorous UV aging tests to ensure superior resistance to sunlight, moisture, and daily wear.
By simulating prolonged exposure to UV rays, we verify that our products maintain their color stability, structural integrity, and performance even under harsh conditions. This commitment to testing guarantees that our waterproofing strips will not crack, fade, or degrade over time—providing your customers with reliable, aesthetically pleasing solutions for years to come.
Rigorous Hardness Testing
We ensure that every bathroom threshold and shower seal we produce meets the highest standards of durability. Our products undergo strict hardness testing to guarantee optimal resistance to impact, pressure, and long-term use.
Using advanced testing methods (such as Shore A/D or Rockwell hardness tests), we verify that our waterproofing strips maintain the perfect balance of flexibility and strength—preventing deformation while ensuring a secure, long-lasting seal. Whether for residential or commercial applications, our materials are engineered to endure heavy foot traffic, moisture exposure, and mechanical stress without compromising performance.
Real collaborative, Real Feedback
We have been working with this plastic molding manufacturer for many years, and they have always won our trust with high-quality products, stable supply capabilities and professional technical support. Whether it is custom development or mass production, they can respond quickly and accurately to our needs. The product molding is high-precision, delivery is on time, and the service team is very professional. They are a reliable partners worthy of long-term cooperation.
Jason Somerville
Chief Operations Officer, Epicurious
We have been working with this plastic molding manufacturer for many years, and they have always won our trust with high-quality products, stable supply capabilities and professional technical support. Whether it is custom development or mass production, they can respond quickly and accurately to our needs. The product molding is high-precision, delivery is on time, and the service team is very professional. They are a reliable partners worthy of long-term cooperation.
Jason Somerville
Chief Operations Officer, Epicurious
We have been working with this plastic molding manufacturer for many years, and they have always won our trust with high-quality products, stable supply capabilities and professional technical support. Whether it is custom development or mass production, they can respond quickly and accurately to our needs. The product molding is high-precision, delivery is on time, and the service team is very professional. They are a reliable partners worthy of long-term cooperation.
Jason Somerville
Chief Operations Officer, Epicurious
FAQ
01
Do you have strong R&D and design capabilities to meet different application needs?
Yes! We have a professional R&D team with more than 30 years of experience in bathroom waterproofing solutions. We customize designs based on material properties, installation environment and regional standards (e.g. ADA compliance, EU certification). Whether it is residential, commercial or niche applications (e.g. curved shower enclosures), we can design products according to precise requirements.
02
Can you guarantee fast delivery?
Of course. We have strategic raw material reserves and optimized production lines to provide:
Standard products: 10-15 days after order confirmation.
Custom orders: mold opening time is generally 2 weeks (depending on complexity), 30 days after mold confirmation (depending on order size).
Please contact our sales team for expedited service!
03
How do you ensure product quality?
Quality runs through our entire process:
Incoming material inspection (e.g. TPE/PP hardness, UV stabilizer).
In-process inspection (dimensional accuracy, extrusion consistency).
100% final testing (waterproofing, hardness and UV aging tests according to ASTM/EN standards).
04
Do all products come with full test reports?
Yes. Each batch includes a test report from a third-party lab (e.g. SGS) covering the following:
UV resistance (ASTM G154)
Hardness (Shore A/D)
Waterproofing (EN 14428)
Request sample report via email!
05
Can it be customized?
Of course! We specialize in:
Profile shapes/sizes (e.g. extra-wide door sills).
Colors/finishes (RAL/Pantone matching).
Material upgrades (anti-slip additives, recycled materials).
Share your CAD/drawings and get a free feasibility assessment!
06
What are your payment terms?
Flexible options to meet your needs:
New customers: 30% deposit, 70% before shipment (T/T).
Verified customers: Price negotiable (LC, OA terms available).
Minimum order quantity: 500 meters for standard products; lower prices for long-term partners.
get in touch with us
We are always ready to help you and answer your questions and we will respond patiently and carefully to any consultation or feedback from customers.
Tongxiang Tiansheng Plastic Products Co., Ltd.
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