Are you looking for the best rubber sealants for your car windows but unsure where to start? China is home to several top-notch manufacturers, each offering unique benefits and features. Let’s dive into a comparison of the leading factories to help you make the right choice for your vehicle.

China Butyl Sealant Tape Butyl Tape Rubber Glue …

Product Details: The 4M Butyl Tape Rubber Glue is a synthetic butyl rubber sealant used for sealing and waterproofing car windshields, headlights, doors, and other automotive components. It is non-drying and non-hardening, ensuring permanent sealing and waterproofing. The product is available in black color and comes in a 4-meter length.

Pros:
– Permanently seals and waterproofs automotive components
– Non-drying and non-hardening, maintaining flexibility over time
– Non-toxic and suitable for various car parts including windshields, headlights,…

Cons:
– May require proper surface preparation for optimal adhesion
– Can be messy to apply if not handled carefully

Auto Glass Sealant

Product Details: Auto glass sealants are typically one-component, moisture-curing polyurethane adhesives. They are designed for direct-glazing applications in automotive glass replacement, suitable for bonding windshields and side glass to the frames of cars, buses, and special vehicles. These sealants are often primerless, odorless, and have high viscosity, ensuring easy application and strong adhesion. They cure with atmospheric moisture and provide a fast tack-free time, even in cold temperatures.

Pros:
– Primerless application simplifies the process
– Odorless, making it comfortable for use in enclosed spaces
– High viscosity for easy application with manual or automatic guns
– Fast tack-free time and strong adhesion even in cold temperatures
– Excellent extrudability, shape retention, and smooth appearance
– Easy for secondary maintenance due to proper hardness
– Resistant to wear and tear, with no bubbles after curing

Cons:
– Must be used by professional, experienced users for optimal results
– Requires testing for adhesion and material compatibility if used for other appli…
– Limited shelf life, typically around 9 months

Windshield Polyurethane Sealant

Product Details: Windshield polyurethane sealant is a one-component, moisture-curing adhesive. It is used for direct assembly of automobile windshields, side windows, and rear windows. The sealant is also suitable for bonding glass in ships, containers, and refrigerators. It comes in various packaging types, including aluminum tubes and aluminum foil sausages. Key technical data includes a surface dry time of 30-60 minutes, curing rate of ≥ 3 mm/d, Shore hardness of 45-60 A, and tensile strength of 6.0 Mpa.

Pros:
– Single component, moisture curing, simple operation process
– Good thixotropic property, no flowing of facade coating
– No corrosion to the adhered material, aging resistance, vibration fatigue resist…
– High elasticity, high strength, and excellent adhesion
– Primerless application in some formulations
– Fast tack-free time and safe strength even under cold temperatures
– Excellent water, weather, and aging resistance
– Paintable and polishable

Cons:
– Must be used up within a specified period after opening, otherwise strictly seal…
– Requires pre-test if base materials have special demands
– Avoid direct contact with skin and eyes; wash immediately with plenty of water i…
– Needs auxiliary tools for positioning heavy or movable workpieces within the cur…
– Recommended operating conditions include specific temperature and humidity range…

Price Sheet for China PU Sealant for Windshield Used …

Product Details: Junbond’s Polyurethane (PU) Sealant for windshields is designed for automotive applications, particularly for windshield installation and repair. The sealants, such as JUNBOND JB16 and JB18, are characterized by their high viscosity, primer-less application, and excellent bonding properties. They are available in drum packages and 400ml cartridges. The sealants are waterproof and come in black color. They are suitable for aftermarket auto glass replacement and ensure a strong, durable bond.

Pros:
– High viscosity for strong bonding
– Primer-less application for convenience
– Waterproof to ensure durability
– Excellent bonding properties for reliable seal
– Suitable for aftermarket auto glass replacement

Cons:
– Limited color options (available in black only)
– May require specific application skills for optimal results

High Quality PU Auto glass Adhesive Sealant from China …

Product Details: PU1630F is an easy-to-use, fast-cure urethane automobile auto glass adhesive. It is designed for direct glazing applications and is known for its rapid curing time, making it efficient for automotive glass repairs and replacements. This adhesive is suitable for use on car windshields, bus glass, and other automotive glass applications.

Pros:
– Fast curing time, enhancing efficiency in automotive glass repairs and replaceme…
– Easy to use, reducing the complexity of the application process.
– High bonding strength, ensuring durable and long-lasting seals.

Cons:
– May require specific conditions for optimal curing, such as controlled temperatu…
– Limited information available on long-term durability under extreme weather cond…

Top 5 Auto Glass Sealants for Superior Protection and Longevity

Product Details: The auto glass sealant is a one-component, cold-applied, fast-curing polyurethane adhesive designed for replacing direct glazed automotive glass parts. It is primerless to glass and offers high bond strength and weather-resistant protection.

Pros:
– Primerless to glass, reducing application time
– Fast curing formula with a short minimum drive away time (MDAT)
– High bond strength and weather-resistant protection
– Cost-effective and suitable for various auto glass projects including windshield…
– Easy to apply with included application tips and personal protection gear

Cons:
– May require specific conditions for optimal curing
– Limited shelf life once opened
– Can be messy if not applied carefully
– May not be suitable for all types of glass or vehicle models without proper test…

Is there a cheap way to seal the rear windshield?

Product Details: The rear window seal replacement involves removing the old seal, treating any rust, and installing a new seal. For W126 and W116 models, it is crucial to specify the correct generation of the seal. The process includes removing interior panels, cutting out the old seal, chipping away old glazing putty, and applying new sealant. Recommended sealants include Mercedes-specific sealant (part number 001-989-31-20) or 3M non-hardening Auto Bedding and Glazing compound (08509). The new seal should be secured using the string method and additional sealant applied around the glass opening.

Pros:
– Using a high-quality seal like URO or Mercedes OEM ensures a better fit and dura…
– Applying 3M 08509 or Mercedes-specific sealant helps in achieving a watertight s…
– The string method and additional tools like glass suction cups make the installa…

Cons:
– The process is extremely time-consuming and requires the removal of several inte…
– Old glazing putty must be chipped out carefully, which can be hazardous and requ…
– The URO seal may lack sharp bends near the bottom corners, requiring additional…

China Car Rubber Sealant Manufacturers and Factory, Suppliers

Product Details: Junbond sealants are manufactured by Shanghai Junbond Building Material Co., Ltd. and Guangdong Pustar Adhesives & Sealants Co., Ltd. They offer a range of sealants including silicone and polyurethane types. These sealants are available in various packaging forms such as 300ml cartridges, 590ml sausages, and 200L barrels. They are used in multiple applications including construction, automotive (especially for windshield bonding), and household purposes.

Pros:
– Excellent resistance to water, UV rays, and extreme weather conditions.
– Superior adhesion on a wide range of surfaces including glass, ceramics, wood, m…
– High flexibility allowing for expansion and contraction without compromising bon…
– Good high and low temperature resistance (-40 ºC ~ 200 ºC).
– Environmentally friendly and supports faster processes in OEM and aftermarket ap…
– Neutral curing and non-corrosive properties.

Cons:
– Minimum Order Quantity (MOQ) requirements can be high (e.g., 500 cartons or 3000…
– Storage conditions need to be strictly adhered to (e.g., dry and shady place bel…
– Lead time for bulk production can be around 1-2 weeks depending on the order qua…

Windshield Sealant China, Wholesale, Manufacturers

China Rubber Seal Strip Manufacturer

Product Details: Seashore Rubber offers various types of seal strips, including rubber extrusion seal strips, co-extrusion seal strips, and plastic seal strips. The primary material for rubber seal strips is EPDM rubber, known for its resistance to corrosion, aging, water vapor, and extreme temperatures. These strips are used in applications such as door and window sealing, automotive, and building construction. They come in various cross-sectional shapes and have no length limit. The co-extruded profiles include metal clamps and tongue-shaped buckles, enhancing durability and ease of installation.

Pros:
– Resistant to corrosion, aging, and extreme temperatures
– Durable and easy to install
– Good anti-seepage, anti-leakage, and water-proof effects
– Can be customized to various cross-sectional shapes and lengths
– Anti-ozone and anti-weather properties
– Noise elimination, waterstop, and dustproof capabilities

Cons:
– Limited information on specific cons, but potential issues could include higher…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Rubber Sealant for Car Windows Factories in China

What materials are commonly used for car window rubber seals in China?

Car window rubber seals in China are often made from EPDM (Ethylene Propylene Diene Monomer) rubber, which is known for its excellent weather resistance, water resistance, and ozone resistance. Other materials like PVC, TPE (Thermoplastic Elastomer), and TPV (Thermoplastic Vulcanizate) are also used, depending on the specific application and requirements.

What are the key properties of EPDM rubber seals for car windows?

EPDM rubber seals for car windows have several key properties that make them ideal. They offer high tear and abrasion resistance, good low temperature flexibility, and excellent resistance to weather aging, ozone, and chemicals. They also provide good water and gas resistance, ensuring a tight and durable seal.

How do I find a reliable manufacturer for car window rubber seals in China?

To find a reliable manufacturer, you can explore industry-specific directories, attend trade exhibitions, and use online platforms. Verify the supplier’s credentials, request samples, and check client reviews. Look for manufacturers with certifications like ISO 9001 and other relevant standards to ensure quality and reliability.

What is the typical production process for car window rubber seals?

The production process typically involves extrusion, where the rubber material is forced through a die to create the desired profile. Additional processes may include precision cutting, splicing, and value-added finishing services. Some manufacturers also offer in-house tool and mold design to meet specific requirements.

What are the common applications of car window rubber seals beyond automotive use?

While primarily used in the automotive industry, car window rubber seals can also be applied in other areas such as industrial electrical equipment, building doors and windows, ships, and machinery. They are versatile and can serve functions like shock absorption, waterproofing, sound insulation, and dust prevention in various settings.