Silicone Gasket
Why Choose Us
Our certificate
We have approved the Quality and Environment System ISO9001:2015 and ISO 14001:2015.all of the raw materials meet the ROHS, REACH, and PAHS, and most of our products have been approved by the NSF, FDA, LFGB, ACS, KTW-W270, WRAS, and UL.
Advanced Equipment
We have advanced production equipment and testing equipment such as automatic feeding machines, automatic packaging machines, injection molding machines, automatic feeding machines, automatic sorting machines, intelligent cutting machines, perform machines, etc.
Quality Control
After completion of manufacturing, the sealing ring needs to undergo appearance inspection, dimensional inspection, pressure test, media resistance test, air tightness, hardness, tensile strength, elongation, tearing performance, compression deformation under high and low temperatures, aging resistance, Water resistance, corrosion, and other inspection items to ensure that the quality meets standard requirements.
Quality customer service
Our dedicated team is always ready to answer your questions, provide you with detailed information about our products and guide you in your choice. We understand that every customer is unique.
What is Silicone Gasket
Silicon gaskets have a water-repelling material that repels liquids, resists moisture, and maintains a watertight seal. This sealing ability is essential for industries dealing with moisture or water and great for outdoor use in wet weather conditions.Silicone gaskets offer a wide range of benefits, making them a top choice for gasket manufacturing. As a flexible material converter, we've worked with a variety of gaskets, which is why we're answering questions about one of the most common gasketing materials.
Benefits of Silicone Gasket
Ability to withstand high and low temperatures
Silicone gaskets can withstand temperatures up to 392 degrees Fahrenheit continuously. This makes it great for many industrial applications. It can be exposed to high heat levels without degrading or wearing out. Silicone gaskets can also withstand heat up to 428 degrees Fahrenheit intermittently.On the other hand, they can also withstand extremely cold temperatures. They can remain flexible at as low as -94 degrees Fahrenheit.
Excellent insulation
Silicone gaskets have conductive capabilities that make them excellent insulators of electricity. By blending silicone with nickel-graphite or silver-plated aluminum particles, silicone gaskets can shield electromagnetic interference (EMI).Silicones are found in most high-voltage insulators and other electrical components. They can be cross-linked by different chemical reactions, making them non-reactive at high temperatures. The electrical industry relies significantly on these non-reactive materials. Where electromagnetic discharge is a problem, silicone can also be blended with a semi-conductive carbon to prevent electromagnetic discharge.
Highly durable
Silicone gaskets are highly durable and resistant to UV light, ozone, and extreme weather conditions, making them ideal for outdoor gasketing.
Plus, the durability of silicone makes the gaskets highly economical since it is a reliable and stable material. You can use silicone gaskets for a long time without them showing wear, and they don't require much maintenance once installed.
Fda approved
Because silicone gaskets are FDA-approved, they can be used in medical equipment, health care instruments, and food processing plants. They can also be mixed with other FDA-approved materials for high tear strength.Unlike asbestos gaskets, silicone gaskets are also physiologically inert (not toxic or harmful to people). Their high tear strength and inertness make silicone gaskets useful for healthcare, food processing, medical diagnostic equipment, and pharmaceuticals.
Compression set reliance
Compression set reliance means that silicone gaskets function well under pressure by returning to their original thickness even after being compressed for long periods. Silicone gaskets are a smart choice for a lower compression set. A compression of 100% means the material will never return to its original thickness. Lower compression set reliance materials ensure the material doesn't get deformed in certain temperatures.Matching the compression set reliance of your material to your intended use is essential. If the gasket material deforms, the seal will fail, leading to leaks and contaminations.
Flame retardant
Silicone gaskets have low flammability levels, which makes them ideal for industries that generate excessive heat. They can be used in telecommunications equipment and mass transit systems. Silicone gaskets meet the testing requirements from Underwriters Laboratories (UL) for fire safety and flame resistance, meaning they can achieve UL94V0, UL94V1, and UL94HF1 flammability standards.
Aerospace
Silicone gaskets resist extreme temperatures, UV light, ozone, and chemicals. Because they can handle extreme weather and temperatures without wearing down, they're often the right fit for airplanes, space shuttles, and similar vehicles.
Transportation
Silicone gaskets are stable and durable, maintaining their resilience and strength even in extreme conditions. Because they can handle unnecessary stress without issues, they are great for personal, commercial, or industrial vehicles. In addition, they reduce vibrations, provide high-quality radiator seals, and are otherwise used for mass transit systems like buses and trains.
Commercial applications
In the construction industry, silicone gaskets are used as seals for HVAC systems and windows or doors. They can also be used in engine gaskets to vent ducts. Other silicone gasket uses include serving as seals in food processing machinery and industrial oven seals in the food industry. The medical industry uses them for medical equipment like healthcare devices or for pharmaceutical purposes.
Types of Silicone Gasket
Solid silicone gaskets
Solid silicone gaskets are not always soft but rather tightly packed and more rigid than sponge silicone. If you need a seal rating of IP67 or higher, you'll want to choose solid silicones. Solid silicones can offer exceptional sealing capabilities, but remember that they're challenging to compress because of their hardness and require 15 to 20% compression.
Sponge silicone gaskets
Sponge silicone gaskets offer more cushioning and padding. They can be open-cell or closed-cell. Open-cell silicones contain pockets that allow water, air, and chemicals to pass unless the gasket is compressed.Closed-cell silicones have pockets filled with nitrogen to prevent water, air, or other chemicals from passing through, even at low compression. They will need at least 50% compression. Sponge silicone gaskets have a higher temperature threshold of 500 degrees Fahrenheit.
Foam silicone gaskets
Foam silicone gaskets can be soft, medium, firm, or extra-firm, offering different compression levels. Like sponge silicone gaskets, foam silicone gaskets also need at least 50% compression. They can be open-cell, closed-cell, or a mixture of both. They have a temperature threshold of 400 degrees Fahrenheit.
Die cut silicone gaskets
Die cut silicone gaskets are the typical type of gasket. It's a more economical option, especially for large volumes, because you can produce thousands of die-cut silicone gaskets per hour. Die cutting uses a specialty tool to create custom parts. If you're using your design with custom sizes and thicknesses, die cut silicone gaskets could be a good option for you.
Molded silicone gaskets
Molded silicone gaskets provide a higher performance seal than die-cut silicone gaskets. However, this might come at a higher upfront cost even though both are good for high-volume production.
Conductive silicone gaskets
Conductive silicone gaskets are made up of a mix of high-quality silicone and conductive particles. They are filled with conductive materials like nickel, carbon, and silver-plated nickel, and are used for electronic equipment.
How Do Silicone Gaskets Compare to Rubber Gaskets?
While rubber for rubber gaskets comes from a rubber tree, silicone is synthetic. Silicone gaskets can be more efficient and perform better than rubber gaskets. For instance, silicone gaskets are better when dealing with extremely high temperatures.
Natural rubber can work well in temperatures from -58 degrees to 176 degrees Fahrenheit intermittently. Silicone can handle more extreme temperatures, from -94 degrees to 426 degrees intermittently. Natural rubber starts to wear down at 176 degrees and melts by 248 degrees.
Rubber is not used with ozone, strong acids, fats, oils, and grease. Silicone, on the other hand, can be used with these materials. For outdoor applications, you can use silicone gaskets in UV and extreme weather conditions.
Material Grade of Silicone Gasket
High Quality Silicone
High quality silicone is the most popular silicone compound that we offer. This material provides good sealing capabilities in both high and low temperatures. It also offers great durability as well resistance properties while also being non-toxic. This material is suitable for use in a wide range of applications and environments.
Food Contact Grade
Our food contact grade silicone is manufactured to conform to FDA standards. This grade has excellent heat and flame resistance while also providing very good ageing and weathering characteristics. We can also supply this silicone food quality rubber sheeting in a choice of colours: Translucent, White, Blue and Red to meet your specific requirements.
Metal Detectable Silicone
Metal detectable silicone is a high-quality, FDA approved material. As the name suggests, this particular gasket material contains additives that are visible to metal detector scanning equipment. This allows you to quickly and easily identify and remove any unwanted fragments from your products.
High Temperature Silicone
High temperature grade silicone provides many of the same resistance and mechanical properties found in our high grade silicone with the addition of a wider operating temperature range. This silicone gasket material is able to withstand many hours of use at 300°C as well as 315°C intermittently. Our high temperature silicone material is also fully FDA and EC complaint.
Fluorosilicone Material
Our fluorosilicone gasket material provides superior resistance to fules, oils, solvents and chemicals compared to our other silicone material grades. Fluorosilicone uses a modified silicone rubber which has been fluorinated which essentially “caps off” the polymer chains. This greatly increases the chemical resistance and improves use in applications where fuels, coolants and oils may be present.
Glass Reinforced Silicone
Glass reinforced silicone provides many of the same resistance properties found in high quality silicone with the addition of superior physical properties. This silicone gasket material offers superior durability and tear resistance for use in highly demanding applications, such as non-stretch gaskets and seals.
Conductive Silicone
Conductive silicone gaskets are manufactured with a carbon compound which enhances the material with superior electrical resistant properties. They also provide the same wide operating temperature range found in our other silicone material grades. We regularly supply these gaskets for use as a low amperage conductor or as protection against electrostatic discharge.
Key Comparison Factors of Neoprene and Silicone Gaskets
Material Composition
Neoprene and silicone are both synthetic rubbers that have different properties and applications. Neoprene gaskets are manufactured using a synthetic rubber called chloroprene. Neoprene, commonly used in gasket production, offers excellent resistance to weathering, ozone, oils, chemicals, and moderate temperature variations. Its composition provides durability and reliability in various sealing applications.
Flexibility and Compression Set
Flexibility and compression set are two important factors to consider when selecting a foam gasket. Flexibility refers to the ability of a gasket to conform to irregular surfaces and accommodate dimensional variations while compression set resistance measures how well a gasket retains its original shape and thickness after being compressed for a long time. The lower the compression set value is, the better the gasket will go back to its original shape and thickness.Neoprene gaskets possess good flexibility, allowing them to conform to irregular surfaces and maintain their sealing performance and durability over repeated cycles of compression and relaxation.
Temperature Resistance
One of the factors to consider when choosing a gasket material is its operating temperature range. Neoprene gaskets are capable of withstanding a moderate temperature range, typically ranging from -40°C to +120°C (-40°F to +248°F). Their thermal stability makes them suitable for sealing applications where exposure to fluctuating temperatures is expected, without compromising the gasket's integrity. In contrast, Silicone gaskets excel in high-temperature environments, exhibiting superior heat resistance. With a typical temperature range of -50°C to +230°C (-76°F to +446°F), silicone gaskets can reliably seal applications that experience extreme heat or significant temperature variations.
Chemical Resistance
Neoprene has impressive chemical resistance to oils, greases, solvents and other petroleum products. It is also resistant to moderately chemical sand acids. Silicone gaskets, on the other hand, are more prone to swelling or degradation when exposed to these chemicals. This makes neoprene gaskets more suitable for applications that involve harsh or corrosive fluids, such as automotive, industrial, or marine environments. Silicone gaskets are more suitable for applications that involve inert or non-reactive fluids, such as food, medical, or pharmaceutical industries.
Environmental Resistance
Both neoprene and silicone gaskets offer good to excellent resistance to environmental conditions. Neoprene gaskets can resist damage and degradation from weather, water, ozone, sunlight, oxidation and temperature. As for Silicone gaskets, they are also highly resistant to moisture, sunlight, ozone, oxygen and extreme temperature exposures.
Abrasion Resistance
Abrasion resistance is the ability of a material to withstand the mechanical action of rubbing, scraping, or erosion that can lead to surface degradation over time. Neoprene's unique properties contribute to its exceptional resistance to abrasion, allowing neoprene gaskets to maintain their structural integrity and performance even in harsh operating conditions. On the other hand, silicone has poor abrasion resistance. However, silicone gaskets can still offer sufficient abrasion resistance for certain applications, particularly those where other properties of silicone are advantageous.
Process of Silicone Gasket
01
Extrusion
This method of fabrication is designed for creating uncured raw material by using a die to form the product, which is a uniform cross-sectional shape. The process of extrusion takes the raw material through an extruder, with temperature changes and rotating action of the screw. The material is forced though a designed heated dye that shapes the product before curing. Next, the product is washed and cooled, either by water or air, before cleaning at room temperature. At this stage, the material is cut into the final product specification
02
Injection Molding
Injection molding is designed for creating product material in a more complex process than compression, transfer molding, or liquid injection molding. It is arguably the most common molding method. It is a robust method in which the product can vary greatly in size, complexity, and application. The difference from liquid injection molding is that there are mold halves and the material is forced into the hot cavity with a ram or screw-type plunger. The mold halves are clamped together before inserting the material.
03
Liquid Injection Molding
Liquid injection is designed for creating product material in cavities. The process accomplishes this by using liquid material through an injection nozzle in the mold cavity. This method differs from other injection molding methods because it relies on mechanical mixing of the raw material. Liquid injection is a‘high-volume'process that has heated cavities. The raw material is forced into the closed heated cavity with pressure and the raw material takes the form of the cavity. In this method there is little flash, which means fast turn-around time.
04
Compression Molding
This method of fabrication is designed for creating product in cavities by placing preform rubber into a heated mold. A pre-measured amount of material (e.g., granules, powders, or pellets) is deposited into the open heated cavity. A heated plunger closes the cavity and applies pressure, usually 15,000 to 20,000 psi. As the material melts, it is driven into all parts of the cavity. The heat and pressure is maintained until the material has cured. Then the cavity is opened and the part is removed. There can be various heating system and multiple cavities employed.
How to Clean Your Silicone Gasket and Tools?
Mild soap and water
For daily cleaning, simply cleaning the washer with mild soap and water can be effective. This can help remove dirt and other debris without damaging the gasket.
Rubbing alcohol
If the washer is contaminated with grease or oil, rubbing alcohol can be used to dissolve and remove these substances. Apply a small amount of rubbing alcohol to a clean cloth and gently wipe the joint until clean.
Bleach solution
If the joint is contaminated with mold or mildew, one part bleach solution will work for ten parts water. Apply the solution to the joint with a rag or sponge and let it sit for a few minutes before rinsing it with water.
White vinegar
White vinegar is an effective cleaning solution for mineral deposits and hard water stains. Simply dip a cloth or sponge in white vinegar, apply it to your joints, let it sit for a few hours, then rinse with water.
How to Maintain Silicone Gasket
Match the gasket material to the job
Start by considering “TAMP.” This memory-jogging acronym stands for temperature, application, media and pressure. Specific factors to consider are: temperature of media (which should include any cleaning processes,) and the external temperature range, internal pressure, and the nature of the media itself, particularly whether it's corrosive.Look at the gap being sealed. Is it uneven? How often will the joint be opened? An enclosure gasket for an indoor electrical cabinet sees very different usage and conditions to what boiler seals endure.
Store gaskets correctly
Avoid exposure to sunlight as UV accelerates aging. Temperature extremes will do the same, so keep them away from heat sources and in winter protect them from freezing. Humidity can damage some materials too.Don't hang gaskets because they'll stretch. Don't place loads on them as the material may take a compression set. Rubber ages, so if possible, use date codes and discard after four years.
Use best-practice installation techniques
Clean surfaces thoroughly, then inspect for damage, especially any scoring that creates a potential leak path. Clean and lubricate bolt threads and heads to avoid making torque appear higher than what the joint actually sees. Seat the gasket carefully, then bring the joint together and follow best-practice methods for tightening.Premature gasket failure often forces unplanned downtime, disrupting schedules and hitting capacity. Careful attention to gasket material selection, storage and installation reduces the likelihood of premature failure and all the costs that go with that.
Our Factory
We are a major rubber sealing products manufacturer with advanced research and development, manufacturing, and sales. We have approved the Quality and Environment System ISO9001:2015 and ISO 14001:2015.Our products are extensively applied to Food and Drinking Water Sanitary and bathing products, electronic and electric appliances hardware and machinery Auto parts, etc.We are professionally specialized in rubber O-rings, Y-seals, Shower gaskets, RO membrane seals, Silicone tubes, and other industries' customized rubber parts.To further increase the quality, all of the raw materials meet the ROHS, REACH, and PAHS, and most of our products have been approved by the NSF, FDA, LFGB, ACS, KTW-W270, WRAS, and UL.
Certificate
FAQ
As one of the most professional silicone gasket manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized silicone gasket at competitive price from our factory.
silicone fabrications, silicone extrusions, silicone sheets