Silicone O Ring Supplier In China
High quality silicone o ring for automotive ,electronics,medical,and food processing-delivering safe,durable sealing solutions
Certified Standards For Silicone O Rings
We offer Silicone O-Ring with material approval,customizable for diverse industry application
Your Trusted Silicone O-Ring Manufacturer: Custom Silicone O -Ring Capabilities
Size:
1.AS568
2.Metric Silicone O Rings
3.JIS
4.Non-standard
We maintain a massive stock of standard silicon O rings (typically 70 Shore A, in standard Red or Translucent) ready for immediate global dispatch. We ensure your MRO (Maintenance, Repair, and Operations) and assembly lines keep moving without delay.
Color:
1.Transparent
2.White
3.Blue
4.Red
5.Black and so on
Hardness: shore 20A-shore 80A
Material grade:
1.Food Grade Silicone
2.Medical Grade Silicone
3.High Temperature Silicone
4.Flame Retardant Silicone
Cross Sections:
1.Standard O-Rings
2.Large Silicone O Ring
3.Cord O-Rings
4.Splicing Silicone O Rings
For large-scale outdoor lighting enclosures, oversized food-processing vats, or semiconductor vacuum chambers, custom molding is cost-prohibitive. We produce high-strength [spliced and vulcanized silicone rings] with infinite inner diameters, saving you thousands of dollars in tooling fees and weeks of lead time.
Extruded&Molded:we have two different process, for the small size silicone o ring, we choose the molded method to make it, for the large silicone o ring, we choose the extruded machine to manufacture it，•[ Precision Custom Molding]: Need a micro-miniature seal, a non-standard cross-section, or a highly specific durometer? We engineer custom silicone o rings ranging from a sponge-like 20 Shore A for fragile plastic housings, up to a rigid 80 Shore A for high-pressure clamping, complete with exact Pantone color matching.
Silicone O-Ring Specifications
| Item | Range |
|---|---|
| Hardness | 20-80 Shore A |
| Silicone O Rings Temperature Range | -60°C to +230°C |
| Color | Transparent, White, Black, Custom |
| Standard | AS568, Metric, JIS |
| Certification | FDA, LFGB, RoHS,REACH |
Options Of Silicone O-Rings Provided By RISEUP
We manufactured different kinds of silicone o rings, you can see the below details information
O Rings Silicone Plumbing
It is a food grade,high temperature resistant waterproof sealing o ring .
Main function: Used in connecting parts of water‑contact equipment such as water purifier filter cartridges, faucet aerators, shower head connectors, coffee machines, water dispensers, and similar devices. Its primary role is leak‑proof sealing.
Material advantages (why choose silicone): Compared with ordinary black nitrile rubber (NBR), silicone offers superior aging resistance, a wide operating temperature range , and is non‑toxic and odorless. It is certified to FDA or LFGB standards, making it suitable for contact with drinking water.
Tube Dampers Silicone O-Ring
It is a silicone o ring specifically designed for vacuum tube equipment such as audio amplifiers and guitar amps. Its primary functions are to absorb vibration and stabilize the internal structure.
High‑quality high‑temperature‑resistant silicone damping o rings are typically red or orange. we are not recommended to use NBR (nitrile rubber), as ordinary black NBR cannot withstand high temperatures and will quickly melt or harden, leading to premature failure.
Silicone O Ring For Water Bottle
It is typically used in the groove on the inside of a cup lid, or integrated into the sealing assembly at the drinking spout – for example, beneath the bite valve of a sports bottle, or along the edge of the inner plug of a vacuum flask. They must be made of food‑grade silicone that can withstand both high and low temperatures, as they come into contact with water. They also need to have excellent resilience. Silicone is the most cost‑effective material choice for this application.
Silicone O Ring For Jewelry
These silicone parts serve as small accessories or invisible protective pads for jewelry. They can also be customized for DIY projects according to your specific needs. Thanks to silicone’s excellent flexibility and food‑grade safety, it is widely used in the jewelry and accessories industry.”
Silicone O Ring For Pandora
It is small silicone o rings, it is used for the pandora bracelet,their functions are primarily for positioning or preventing slippage.
It usually comes in transparent or black, with a nearly invisible design,because the sillicone is elasticity raw material,it is highly versatile and can also be used in a variety of DIY beaded bracelet projects.
Flat Silicone O Ring
In the field of engineering sealing, its more technical name is “rectangular sealing ring” or “square ring.”
Main advantages:
1.No rolling (anti-twist feature): This is its biggest function point. Because a flat ring has a planar contact surface with the groove wall, it generates high friction and stays firmly seated in the groove – it will never roll. This makes it particularly suitable for dynamic reciprocating motion (e.g., cylinder pistons).
2.Wider sealing contact area: When compressed, the flat ring forms a broad “sealing band.” For rough surfaces or flanges with minor scratches, flat rings offer greater tolerance and more reliable sealing.
3.Better extrusion resistance: Under high‑pressure conditions (e.g., hydraulic systems), round O‑rings are prone to being squeezed into metal clearances and damaged (extrusion failure). Flat rings, with their thicker base, provide significantly better resistance to high‑pressure extrusion than round rings of the same size.
Main Disadvantages:
1.Requires greater compression force: Deforming a flat square block takes much more effort than compressing a round ball. If used on plastic bottle caps or thin‑walled containers, insufficient clamping force will fail to achieve proper sealing, and the plastic parts may even crack.
2.High precision required for groove dimensions: Flat rings are extremely sensitive to groove depth and width. If the groove is too deep, the ring won’t compress properly; if too wide, the ring may shift sideways. In contrast, round O‑rings, being more deformable, are much more forgiving of groove dimensional variations.
Typical applications:
1.Dynamic sealing: Piston seals in pneumatic/hydraulic cylinders (reciprocating motion, anti‑roll).
2.High‑pressure static sealing: High‑pressure flanges, vacuum chamber door seals (wide contact surface for leak prevention).
3.Quick‑connect couplings: Pneumatic tube fittings requiring frequent insertion/removal (wear‑resistant and not easily dislodged).
Medical-Grade Silicone O-Rings
Medical‑grade silicone O‑rings are the most stringently certified and biologically safest category among all O‑rings.
Our products have passed testing in accordance with the ISO 10993 series of standards (biological compatibility testing), which specifically include:
1.Cytotoxicity test: The material must not kill surrounding living cells.
2.Sensitization test: Must not cause skin or tissue allergic reactions.
3.Intracutaneous reactivity test: When implanted or in contact with subcutaneous tissue, it must not cause redness, swelling, inflammation, or other rejection responses.
Beyond certification, the manufacturing process also differs from that of ordinary silicone. We employ a platinum‑curing process to ensure ultra‑low extractables and sterilizability.
Fda Silicone O Rings
FDA‑grade silicone O‑rings are sealing rings specifically designed for contact with food or drinking water. Their certification requirements are lower than those for medical‑grade, but significantly higher than industrial‑grade.
Our products comply with FDA 21 CFR 177.2600, the regulation for food‑contact materials. We use high‑purity raw materials that are BPA‑free (bisphenol A‑free) – pure virgin rubber containing no industrial carbon black – ensuring the quality of our silicone rings.
These products are mainly used in water bottles, coffee machines, baby bottles, food pipes, and similar applications.
Fep Silicone O Ring
FEP‑encapsulated silicone O‑rings (FEP = fluorinated ethylene propylene, a fluoroplastic). These are composite‑structure sealing rings designed to resolve the conflict between pure rubber rings (poor chemical resistance) and pure plastic rings (lack of elasticity). They offer excellent chemical resistance, withstanding most chemical media except for a few substances such as alkali metals and fluorine under high‑temperature conditions.
Key features:
1.Resistant to both high and low temperatures.
2.Low coefficient of friction.
3.Compliant with FDA regulations.
4.Color is typically red or orange for easy identification.
Primary applications:
Widely used in pumps, valves, reactors, filters, and other equipment in the chemical, pharmaceutical, food, and petroleum industries.
Soft Silicone O Ring
The hardness of silicone rings is measured using Shore A durometer – the lower the number, the softer the material.
Solid silicone sealing rings with low hardness:
Soft silicone rings: Typically Shore A 30° – 50°.
Extra‑soft silicone rings: Can be as low as Shore A 20° (feels similar to a rubber band or gummy candy).
Advantages of soft silicone rings:
1.Extremely low compression force (energy‑saving).
2.Excellent conformability (high tolerance for surface imperfections).
3.Better sealing performance for low‑pressure gas applications.
They are well suited for use on fragile materials such as plastic bottle caps, acrylic jars, and glass containers.
However, when selecting soft rings, please be aware of the following drawbacks:
Very poor extrusion resistance (the biggest concern under high pressure): Even a moderate increase in pressure can cause the soft ring to be squeezed into metal clearances like toothpaste, leading to tearing. They are absolutely not recommended for hydraulic systems or high‑pressure pipelines.
Easily damaged during installation: A fingernail scratch can leave a permanent dent; when passing over threads, they are much more likely to be nicked or cut than standard‑hardness rings.
High friction: The surface tends to feel sticky. If used in dynamic sealing (e.g., piston reciprocating motion), they may stick to the cylinder wall and “creep,” causing distortion or abnormal noise.
Stretchy Silicone O Rings
It is typically aimed at the DIY / general consumer market, where it is used as a “multi‑purpose strap,” “wristband,” or “jewelry accessory.” The emphasis is on its manual stretchability.
Glow In The Dark Silicone O Rings
By incorporating photoluminescent pigments (typically strontium aluminate doped with rare earth elements) into ordinary silicone, this material can continuously emit light in the dark after being exposed to light. It contains no radioactive substances whatsoever, relying entirely on the physical principle of “absorbing, storing, and releasing light.”
Primary applications include:
1.DIY jewelry and accessories (the most common use)
2.Outdoor and tactical gear
3.Hookah (water pipe) seals
Heat Resistant Silicone O Rings
This typically means it offers higher temperature resistance and longer service life than standard silicone. You can let us know your specific product requirements, and we can customize silicone rings with optimized heat resistance for your application.
Main applications include:
1.Kitchen appliances: Steam outlets of electric kettles, boiler brew heads of coffee machines, and air fryer door seals – these locations not only come into contact with high‑temperature steam but also undergo repeated thermal cycling.
2.Automotive engine compartments: Turbocharger pipe joints and coolant return hose seals (temperatures often exceed 150 °C).
3.Industrial thermal equipment: Steam pipe flanges, oven door seals, and hot press seals.
Silicone Fda Metal Detectable O- Rings
It is a sealing component specifically designed for food safety applications.
Its biggest difference from commen O‑rings lies in its primary function: preventing foreign‑material contamination.
Because metal additives are incorporated, the material has reduced elasticity, poorer wear resistance, and a tendency to shed powder on the surface.
It is mainly suitable for static sealing applications such as pipe flanges, tanks, and manhole covers. It is not recommended to use in dynamic sealing positions, such as pistons or valve stems.
If you need a more concise version for a product datasheet or a more marketing‑oriented tone, let me know and I can adjust it accordingly.
Nsf Approved Silicone O- Ring
This is a silicone rubber O ring that has obtained certification from the U.S. National Sanitation Foundation (NSF). It is a sealing component specifically designed for high‑safety applications such as drinking water and food contact, and its certification process is more stringent and reliable than FDA compliance alone.
Our products meet both the NSF/ANSI 61 and NSF/ANSI 51 standards. You can confidently place custom orders and procure our products.
PFA Encapsulated Silicone O Ring
It is a PFA‑encapsulated silicon O‑ring, designed to provide both the elasticity of rubber and a corrosion‑resistant outer shell in extreme static sealing applications involving strong corrosion, high temperature, and high purity. It is used in chemical reactors, semiconductor equipment, and strong acid pipelines.
Clear Silicone O Ring
Different from regualr silicone o ring seal, transparent rings contain no carbon black or other fillers; they are made of high‑purity virgin silicone.
Main function: extreme chemical inertness, odorless nature, and no extractables/leachables.
Advantages:
Extremely soft, with excellent resilience (quickly rebounds after compression). Suitable for precision instruments or plastic fittings – even if overtightened, they won’t crack the housing.
Disadvantages:
Because no reinforcing agents are added, their abrasion resistance is much poorer than that of black rings, and their tear strength is low. They can easily be damaged by a fingernail scratch or by being nicked by threads during installation, leading to premature failure.
Applications:
Medical / Laboratory: Used in peristaltic pump tubes and analytical instruments. The transparency allows visual inspection of fluid residues or contamination.
Food / Drinking Water: Found in high‑end water purifiers, baby bottle nipples, and coffee machine fittings. Transparency means no industrial carbon black, and FDA food‑grade certification is almost standard.
Optical / Electronics: Used in watch case backs and waterproof cameras – transparency does not interfere with the product’s aesthetic design.
Decoding Silicone Grades: Platinum vs. Peroxide Cured
Not all silicone o ring seals are created equal. Specifying generic “silicone” is the leading cause of compliance failures, odor complaints, and budget overruns. Whether you are designing a medical pump or sealing an outdoor HVAC unit, selecting the correct curing process and grade is critical.
Here is how RiseUp aligns our silicone manufacturing with your exact engineering requirements:
Platinum-Cured Silicone (The Ultimate Purity): * Target: Food/Beverage & Medical Device R&D Engineers.
The Advantage: Cured with premium platinum catalysts, this grade produces absolutely zero toxic by-products. It is 100% odorless, tasteless, and non-yellowing, completely eliminating the risk of fluid contamination.
Best For: Espresso machines, drinking water dispensers, medical fluid pumps, and laboratory instruments where USP Class VI or ultra-strict FDA compliance is mandatory.
Peroxide-Cured Silicone (The Thermal Workhorse):
Target: Home Appliance & HVAC Procurement Managers.
The Advantage: Offers the most cost-effective balance of extreme temperature resistance (-60°C to +230°C) and excellent weatherability. It resists ozone and UV degradation without hardening or cracking over time.
Best For: Industrial ovens, water heaters, outdoor lighting enclosures, and general appliance sealing where extreme heat or freezing cold is the primary challenge.
Custom Color-Coded Silicone (The Visual Identifier):
Target: Product Designers, Makers, and Assembly Line Managers.
The Advantage: Silicone naturally starts as a translucent base, making it the perfect canvas for custom pigmentation without compromising its physical properties. We manufacture custom silicone o rings in classic Iron Oxide Red, Medical Blue, completely Clear, or any exact Pantone color.
Best For: Decorative visible seals on consumer appliances, or color-coding specific sizes to prevent workers from installing the wrong O-ring on complex assembly lines.
- • Cleanroom Production: Purity cannot be compromised. For our Platinum-cured medical (USP Class VI) and premium food-grade seals, manufacturing takes place in highly controlled cleanroom environments, guaranteeing zero particulate contamination from initial extrusion to final sealed packaging.
Engineering Alert: When NOT to Use Standard Silicone Rubber O-Rings
Silicone is a miracle material for extreme temperatures and ultimate purity, but it has distinct mechanical and chemical limitations. We believe in total engineering transparency. To prevent catastrophic equipment leaks, you should avoid standard VMQ silicone in these two specific scenarios:
Dynamic and High-Friction Environments: Standard silicone is soft and has poor abrasion and tear resistance. In high-speed rotary or reciprocating applications (like fast-moving pistons or dynamic shafts), it will quickly shred or wear down. Solution: Stick to static sealing applications, or ask our engineers to formulate a custom high-tear-strength blend.
Exposure to Mineral Oils & Fuels: If your application involves petroleum-based oils, automotive fuels, or hydrocarbon solvents, standard silicone will absorb the fluid like a sponge. It will swell massively, lose its shape, and completely fail.
The Ultimate Upgrade: Fluorosilicone (FVMQ) What if you are designing an aerospace fuel valve or an automotive sensor that faces freezing -60°C temperatures and jet fuel simultaneously? Standard silicone will swell, and standard Viton will freeze and crack.
The answer is our [Fluorosilicone O-Rings (FVMQ)] . By combining the extreme high/low-temperature flexibility of silicone with the robust chemical and oil resistance of fluorocarbons, FVMQ is the ultimate problem-solver for cold-weather fuel and oil systems.
MOQ 500 pcs, Accept Customization for Small Order. Design Products as Your Idea.
Eliminate Compliance Risks with High-Purity Silicone O-Rings
Don’t risk your brand’s reputation or consumer safety with cheap, odorous rubber seals. Whether you need standard translucent FDA-grade rings for a commercial coffee maker, or custom-colored, platinum-cured VMQ for a critical medical device, RiseUp delivers absolute purity and extreme thermal resilience.
Partner with us for zero-migration materials, rapid custom tooling, and the certified documentation your compliance team demands.
✔️ FDA, LFGB & USP Class VI Certified Compounds
✔️ Exact Pantone Color Matching & Custom Durometers (20-80 Shore A)
✔️ Standard AS568 Stock & Rapid Custom Prototyping
Silicone O-rings typically operate from -60°C to +230°C (-76°F to +446°F). High-temperature grades can withstand even higher temperatures for short periods, making them ideal for extreme heat and cold applications.
Yes. Food-grade silicone O-rings can be manufactured with FDA or LFGB compliant materials. They are widely used in food processing, beverage equipment, and drinking water systems.
Yes. Medical-grade silicone compounds are available for applications requiring biocompatibility, cleanliness, and sterilization resistance, such as medical devices and laboratory equipment.
No. Silicone offers only limited resistance to petroleum oils and fuels. For oil-intensive applications, NBR or FKM O-rings are generally recommended.
Yes. We manufacture custom silicone O-rings in standard or non-standard sizes, with custom hardness, colors, and material grades based on your drawings or samples.
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Alan Chen
Product Sales Manager & Rubber Specialist at RISEUP
