Are you looking for the best silicone seals factories in China? With so many options available, it can be overwhelming to choose the right one. In this article, we’ll compare the top silicone seals manufacturers in China, highlighting their strengths, specialties, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

Custom Silicone Seals Manufacturer in China

Product Details: LegenDay silicone seals are made from 100% organic silicone and are food-grade. They have excellent strength and hardness, and can withstand high pressure. These seals are leak-proof, airtight, and durable, with superior low and high-temperature properties. They are suitable for various industries including pharmaceuticals, aerospace, aggressive chemical processing, oil and gas recovery, and semiconductor wafer fabrication. The seals can be customized in terms of material, color, dimension, grade, and packaging. LegenDay uses cutting-edge equipment such as cut machines, mixing machines, and various cutting processes like die cut, water jet cut, laser cut, lathe cut, and kiss cut to produce precise

dimensions and shapes.

Pros:
– High density and durability
– Excellent weatherability and mechanical properties
– Suitable for hygienic applications
– Strong leak resistance to substances and liquids
– Compact and tight design
– Customizable to specific specifications
– High-performance elastomer with exceptional temperature properties
– Resistant to heat, chemicals, aging, ozone, fungal growth, and water

Silicone Rubber Gaskets Suppliers, Manufacturers, Factory

Product Details: Silicone Rubber Gaskets are cut from rubber sheets or mould pressing. Any sizes and shapes can be produced. They are high-performance mechanical seals with exceptional resistance to extreme temperatures, used to prevent leaks between different substrate sections in a wide range of applications. Key properties include a temperature range of -85°C to +215°C, hardness of 40°-80° Shore A, tensile strength of 5 MPa (min), elongation at break of 200% (min), and tear strength of 15 N/mm. They are odorless and tasteless, making them suitable for food applications.

Pros:
– Excellent weather resistance, ozone resistance, and compression set resistance
– Odorless and tasteless, suitable for food applications
– Stability in extreme environments
– Excellent shock resistance and tear resistance
– High tensile strength and elongation
– Good recovery properties

Cons:
– No significant cons mentioned, but general limitations of silicone rubber includ…

Top 10 Silicone O-Ring Manufacturers and Suppliers in China …

China Silicone O Ring

Product Details: Silicone O-rings are synthetic elastomers based on silicon, with pendant organic groups such as methyl, phenyl, and vinyl attached to silicon atoms. They are available in various types, including VMQ, PVMQ, and FVMQ, and can be formulated to meet specific requirements such as FDA, USP Class VI, and other industry standards. They are used in a wide range of applications including medical, automotive, aerospace, and electronics.

Pros:
– Excellent heat, ozone, and corona resistance
– Good dielectric stability and resistance to many oils, chemicals, and solvents
– Retention of flexibility and low compression set characteristics over a wide tem…
– Superior insulating properties and resistance to UV light, water, oxygen, and mo…
– Non-toxic biocompatibility, making them suitable for medical and food applicatio…
– Can be formulated to meet specific needs such as color, temperature ranges, and…

Cons:
– Low tensile strength and low wear and tear resistance
– Not suitable for concentrated acids and alkalis, steam over 120°C (248°F), petro…
– May require higher cost for platinum-cured versions which offer better flexible…
– Can stretch easily during installation if in low durometers

Liquid Silicone Rubber Seals Manufacturer in China – Lindas

Product Details: Liquid Silicone Rubber (LSR) is a two-component system consisting of long polysiloxane chains reinforced with specially treated silica. It is mixed and rapidly heat-cured into durable elastomers. LSR is biocompatible, durable, and resistant to a wide range of temperatures (-60 °C to +250 °C). It is suitable for various applications including medical devices, automotive components, and electrical insulation.

Pros:
– Highly biocompatible and hypoallergenic
– Durable and long-term stable
– Excellent temperature endurance
– Good elongation, high tear and tensile strength, and excellent flexibility
– Transparent and can be pigmented
– Resistant to water, oxidation, and some chemical solutions
– Excellent insulating properties
– Fast cycle times and efficient manufacturing process

Cons:
– Requires special handling and mixing before curing
– Limited to additive curing with platinum, which can be more expensive than other…
– May require additional processing steps for certain applications

China Silicone Rubber Sealing Strip

Product Details: Silicone rubber strips are made from high-quality silicone rubber material. They are available in various widths (10mm to 100mm), thicknesses (0.3mm to 12mm), and lengths (5m or 10m). These strips have a hardness range of 30-80 Shore A and can operate in a wide temperature range from -60°C to +230°C. They are FDA approved for food contact and exhibit excellent resistance to ozone, UV rays, weathering, and chemicals.

Pros:
– Excellent temperature resistance (-60°C to +230°C)
– Good durability and long service life
– Highly versatile and adaptable to various applications
– FDA approved for safe contact with food
– Exceptional sealing and insulating properties against air, dust, and moisture
– Resistant to ozone, UV rays, and weathering
– Flexible and conformable to irregular surfaces
– Easy machinability and customization options

Cons:
– May be more expensive than other types of rubber strips
– Limited chemical resistance to certain aggressive fluids
– Not suitable for high-pressure applications due to compression set

Silicone Rubber Seals – China Supplier, Wholesale

Product Details: Silicone rubber seals are made from a synthetic elastomer known for its flexibility and wide temperature range. They can operate between -40°C to 200°C (or up to 270°C for some formulations), making them suitable for applications involving extreme temperatures. Silicone seals exhibit excellent elongation and tear resistance, with the ability to stretch up to 800%. They are also resistant to oil and have good UV and ozone resistance.

Pros:
– High flexibility and elongation (up to 800%)
– Excellent temperature resistance (-40°C to 200°C or up to 270°C for some formula…
– Good oil resistance
– Excellent UV and ozone resistance
– Flame retardant properties
– Non-reactive and safe for food contact applications

Cons:
– Lower tensile strength compared to EPDM (approximately 5 MPa)
– Poor abrasion resistance
– Fair electrical resistance
– May swell if exposed to certain oils for long periods

China Custom Silicone Seals

Product Details: The custom silicone seals are made of pure silicone and offer a customized design. They are waterproof, durable, and odorless. The temperature resistance ranges from -40°C to 220°C or up to 260°C for some models. The hardness can be customized between 30-80 Shore A. These seals are suitable for various applications including mechanical, automobile, electrical appliances, and industrial use. The minimum order quantity (MOQ) is 1000 pieces. The production process includes compression molding or silicone injection, and the lead time is typically 10 working days after sample confirmation. Certifications include FDA, LFGB, RoHs, and Reach[1][2][3].

Pros:
– Waterproof and oil-resistant
– Anti-aging and non-toxic
– High temperature resistance (-40°C to 260°C)
– Customizable in any color and size
– Eco-friendly and odorless
– Soft, flexible, pliable, tough, and light
– Heat resistant, UV-resistant, and anti-acid

Cons:
– Minimum order quantity of 1000 pieces
– Lead time of 10 working days after sample confirmation

Rubber Molding | Rubber Extrusion | Liquid Silicone …

Product Details: Rubber extrusions and moldings are manufactured using various processes such as compression molding, injection molding, and transfer molding. These methods allow for the creation of custom rubber parts including seals, gaskets, tubing, and complex profiles. The materials used include Buna, Nitrile, Neoprene, Viton, EPDM, Silicone, and Hypalon. These products are utilized in diverse industries like industrial manufacturing, food & beverage, chemical processing, and automotive. Customization options include different shapes, sizes, and materials to meet specific application requirements[1][2][4].

Pros:
– High versatility in creating complex and custom shapes
– Suitable for a wide range of applications including sealing, noise control, and…
– Can be made from various rubber compounds to meet different performance needs
– Continuous extrusion process minimizes weak spots and enhances structural integr…
– Value-added services such as cutting, drilling, and color matching are available

Cons:
– Requires specific temperature and pressure conditions for different materials
– Can be more expensive for complex or custom designs
– Post-processing may be necessary for some applications
– Material selection is critical and can affect the final product’s performance

Black Power Seal RTV Black Silicone Gasket Maker, TOP1 …

Product Details: Black Power Seal RTV Black Silicone Gasket Maker is a one-component, black, high-performance de-oxime type room temperature vulcanizing silicone rubber. It has a density of 1.38 g/cm³, tensile strength of ≥1.0 MPa, elongation at break of ≥200%, and a hardness of 40 Shore A. The product is suitable for sealing mechanical equipment, micro- and medium-sized axles, gearboxes, and bridge boxes, and is used in industries such as transportation, mining, electricity, and cement. It has excellent high temperature, oil, and weather resistance. The operating temperature range is -60°C to 260°C. The tack-free time is 10 minutes, and the full curing time

is 24 hours at 25°C and 50% humidity.

Pros:
– Excellent high temperature, oil, and weather resistance
– Good resistance to changes in temperature and stress
– Elastomeric rubber layer after curing
– Suitable for various industrial applications including transportation, mining, a…
– High elongation at break (≥200%) and tensile strength (≥1.0 MPa)
– Operating temperature range of -60°C to 260°C

Cons:
– Requires careful surface preparation and cleaning before application
– Initial curing time of one hour and full curing time of 24 hours
– Not suitable for use in extremely cold or dry conditions without extended curing…
– Skin and eye exposure require immediate cleaning and rinsing
– Must be stored in a cool and dry place with a shelf life of 12 months

Comparison Table

Company	Product Details	Pros	Cons	Website
Custom Silicone Seals Manufacturer in China	LegenDay silicone seals are made from 100% organic silicone and are food-grade. They have excellent strength and hardness, and can withstand high pres…	– High density and durability – Excellent weatherability and mechanical properties – Suitable for hygienic applications – Strong leak resistance to su…		legenday.com.cn
Silicone Rubber Gaskets Suppliers, Manufacturers, Factory	Silicone Rubber Gaskets are cut from rubber sheets or mould pressing. Any sizes and shapes can be produced. They are high-performance mechanical seals…	– Excellent weather resistance, ozone resistance, and compression set resistance – Odorless and tasteless, suitable for food applications – Stability…	– No significant cons mentioned, but general limitations of silicone rubber includ…	www.seal-china.com
Top 10 Silicone O-Ring Manufacturers and Suppliers in China …				hongjusilicone.com
China Silicone O Ring	Silicone O-rings are synthetic elastomers based on silicon, with pendant organic groups such as methyl, phenyl, and vinyl attached to silicon atoms. T…	– Excellent heat, ozone, and corona resistance – Good dielectric stability and resistance to many oils, chemicals, and solvents – Retention of flexibi…	– Low tensile strength and low wear and tear resistance – Not suitable for concentrated acids and alkalis, steam over 120°C (248°F), petro… – May re…	www.silicone-tubings.com
Liquid Silicone Rubber Seals Manufacturer in China – Lindas	Liquid Silicone Rubber (LSR) is a two-component system consisting of long polysiloxane chains reinforced with specially treated silica. It is mixed an…	– Highly biocompatible and hypoallergenic – Durable and long-term stable – Excellent temperature endurance – Good elongation, high tear and tensile st…	– Requires special handling and mixing before curing – Limited to additive curing with platinum, which can be more expensive than other… – May requi…	lindasrubber.com
China Silicone Rubber Sealing Strip	Silicone rubber strips are made from high-quality silicone rubber material. They are available in various widths (10mm to 100mm), thicknesses (0.3mm t…	– Excellent temperature resistance (-60°C to +230°C) – Good durability and long service life – Highly versatile and adaptable to various applications…	– May be more expensive than other types of rubber strips – Limited chemical resistance to certain aggressive fluids – Not suitable for high-pressure…	www.chinasealant.com
Silicone Rubber Seals – China Supplier, Wholesale	Silicone rubber seals are made from a synthetic elastomer known for its flexibility and wide temperature range. They can operate between -40°C to 200°…	– High flexibility and elongation (up to 800%) – Excellent temperature resistance (-40°C to 200°C or up to 270°C for some formula… – Good oil resist…	– Lower tensile strength compared to EPDM (approximately 5 MPa) – Poor abrasion resistance – Fair electrical resistance – May swell if exposed to cert…	m.epdmrubberseal.com
China Custom Silicone Seals	The custom silicone seals are made of pure silicone and offer a customized design. They are waterproof, durable, and odorless. The temperature resista…	– Waterproof and oil-resistant – Anti-aging and non-toxic – High temperature resistance (-40°C to 260°C) – Customizable in any color and size – Eco-fr…	– Minimum order quantity of 1000 pieces – Lead time of 10 working days after sample confirmation	www.silicone-tubings.com
Rubber Molding	Rubber Extrusion	Liquid Silicone …	Rubber extrusions and moldings are manufactured using various processes such as compression molding, injection molding, and transfer molding. These me…	– High versatility in creating complex and custom shapes – Suitable for a wide range of applications including sealing, noise control, and… – Can be…
Black Power Seal RTV Black Silicone Gasket Maker, TOP1 …	Black Power Seal RTV Black Silicone Gasket Maker is a one-component, black, high-performance de-oxime type room temperature vulcanizing silicone rubbe…	– Excellent high temperature, oil, and weather resistance – Good resistance to changes in temperature and stress – Elastomeric rubber layer after curi…	– Requires careful surface preparation and cleaning before application – Initial curing time of one hour and full curing time of 24 hours – Not suitab…	www.industryglue.com

Frequently Asked Questions (FAQs)

What are the key qualities to look for in a silicone seals factory in China?

When selecting a silicone seals factory in China, you should look for manufacturers with a strong technical force, high-quality control standards, and well-equipped testing facilities. Companies like Dongguan Hongju Silicone Rubber Products Co., Ltd. and Qingdao SENESCO Materials Co., Ltd. are known for their strict quality control and advanced testing equipment, ensuring the products meet international standards.

What types of products can I expect from silicone seals factories in China?

Silicone seals factories in China offer a wide range of products, including oil seals, gaskets, O-rings, silicone rubber parts, and custom silicone products. You can also find specialized items like rubberized sealing rings, flexitank exhaust valves, and repair clamps. Companies such as Qingdao Source Seal Technology Co., Ltd. and Hebei Shida Seal Group provide a diverse catalog to cater to various applications.

How do Chinese silicone seals factories ensure timely delivery and customer service?

Many Chinese silicone seals factories prioritize timely delivery and excellent customer service. For instance, Insilicone guarantees delivery within three weeks once the order is confirmed, and Xiamen NEWTOP Material Products Co., Ltd. offers competitive pricing and high efficiency. These manufacturers often have dedicated teams for customer support and technical assistance to ensure your needs are met promptly.

What certifications and standards should I look for in a Chinese silicone seals factory?

It’s important to check for certifications such as IATF 16949:2016, which is an industry standard for quality management in the automotive sector. Companies like Hebei Shida Seal Group and Lsrinjection have these certifications, ensuring their products meet high-quality and safety standards. Additionally, look for FDA and UL certifications, especially if you need products for specific industries like food or medical applications.

Can Chinese silicone seals factories provide customization services for my specific needs?

Yes, many Chinese silicone seals factories offer customization services. Companies like Xiamen NEWTOP Material Products Co., Ltd. and See Hope Silicone provide one-stop services including product design, mold design, and manufacturing. They can tailor their products to fit your specific requirements, whether it’s for automotive, medical, or other industries, ensuring you get the exact silicone seals you need.