High Temp Silicone Seal Ring
- YiDa
- Dalian,China
- 15-20 days
- 2 billion/year
1. The high temp silicone sealing ring retains excellent elasticity, running continuously over the temperature range from -60℃ to 230℃, and it hardly hardens or cracks.
2. The composition of our high temperature silicone o rings is silicone rubber tailored to meet FDA food contact requirements so they can be used safely for food contact applications.
3. We provide different kinds of materials, including flame-retardant and oil-resistant ones, and can also create non-standard molds to fit accurately different types of high-temperature equipment.
After working for some time, the high-temperature apparatus typically encounters issues like the sealing rings becoming hard, their elasticity getting lost, and the occurrence of surface cracks, which eventually causes the sealing to fail and the leakage of air, water, or oil. However, the situation does not get better even if the sealing rings are changed. The main reason behind this is that the general sealing rings are unable to endure the high-temperature pressure.
The main focus to the problem is to choose sealing materials which are capable of withstanding high temperatures.
Our high temperature resistant silicone seal rings are manufactured using premium high temperature resistant silicone rubber raw materials. They have very good flexibility even at the temperature range of -60℃ to 230℃ for a long operating time, they do not harden or crack easily, and their compression set is less than 25% (200℃×22h), thus they can significantly lower the risk of leakage due to material aging and also increase equipment maintenance intervals.
Definition of High Temp Silicone O Rings:
We manufacture high temperature silicone o-rings by extrusion and molding using raw materials of food-grade/industrial-grade at high temperature resistant silicone rubber. They exhibit outstanding elasticity along with heat stability, essentially retaining their elasticity in hot environments of long duration and not readily becoming hard or cracked. They can be used for sealing, dustproofing, and waterproofing purposes in high-temperature machines.
Core Parameters of High Temperature Silicone O Rings:
| Performance Indicator | Parameter/Characteristic |
| Material | Silicone rubber |
| Main Styles | O-rings, flat washers, square sealing rings, custom-shaped sealing rings, flange sealing rings, silicone strips, bowl-shaped sealing gaskets, framework silicone sealing rings |
| Temperature Range | Normal: -60℃ to 230℃; instantaneous up to 260℃ |
| Hardness | Shore A 20–90, customizable |
| Color | Primarily black; other colors customizable |
| Dimensional Tolerance | ±0.1mm |
| Inner Diameter | 0.5–1500mm, customizable |
| Cross-Section | 0.5–20mm, customizable |
| Tensile Strength | 4.0MPa–12.5MPa |
| Elongation at Break | 200%–500%, depending on material |
| Tear Strength | 20–40kN/m |
| Density | 1.10–1.30g/cm³ |
| Compression Set | <25% at 200℃×22h |
| Applicable Media | Mainly suitable for oil-free air, high-temperature steam, weak acids/alkalis, drinking water, and hot water; prohibited for petroleum-based oils, non-polar solvents, strong acids, and strong alkalis |
| Insulation | Yes |
Common Materials and Applicable Scenarios for Silicone O Ring High Temperature:
1. Ordinary high temperature silicone: Great economical value, ideal for everyday household appliances, kitchenware, ovens, air fryers, and electric kettles.
2. Vapor-phase silicone: Has very clear, strong, and extremely heat-resistant properties but it is specially made for delicate & expensive equipment.
3. Flame retarding high temperature silicone: Possesses flame retarding features; it is a good fit for electrical appliances, electric heating appliances, and other situations where high safety is required.
4. Oil resistant modified silicone: It offers a combination of heat resistance and oil resistance and is a good fit for high temperature environments with oil mist.
What Are the Specific Advantages of Silicone O Ring High Temperature?
1. Stability and long-lasting seal under extreme temperature ranges.
We produce high temperature o-rings from premium high temperature resistant silicone rubber. It keeps its elasticity from -60℃ to 230℃ and can handle 260℃ for a short period of time without losing sealing performance.
The real plus of our o-rings is keeping good elasticity at high temperature without getting hardened and cracked.Compression set<25% (200℃×22h) means long-term stable operation of equipment and fewer maintenance cycles.
2. Media compatibility and environmental safety.
High temperature o-rings remain highly resistant to oil-free air, high temperature steam, hot water, and mild acids and alkalis. This ability allows them to be used in humid or steamy environments. In addition, the products are made from FDA-compliant silicone compounds, are non-toxic and odorless, and can be immediately used in kitchenware, drinking water equipment, and baking equipment. Thus, these o-rings not only ensure sealing performance but also satisfy the stringent hygiene and safety standards of high-temperature food contact equipment.
3. Dedicated materials and flexible customization for various scenarios.
We provide a wide range of special materials for different working conditions: a general assortment of materials fit for home appliances and kitchenware; vapor phase adhesives appropriate for precision equipment; flame-retardant materials to guarantee electrical safety; and oil-resistant modified materials to deal with oil mist environments. Moreover, points of sale allow customization of dimensions, shapes, colors, and special properties, and molds can be prepared from drawings or samples to exactly accommodate various non-standard sealing slots.
4. Mechanical properties and durability.
High temperature o-rings of different hardnesses (Shore A 20-90) and tensile strength of 4.0-12.5 MPa that excel in providing both softness and high elasticity while having a sufficient level of tear resistance. Its ability to resist wear, aging, and ozone makes it capable of withstanding repeated disassembly or long-term pressure without getting damaged easily, hence ensuring a tight seal and maintaining reliable sealing performance even under severe working conditions.
Yida Rubber's Production Scale and Manufacturing Capacity.
We got the rubber industry in our veins as early as 1993; company officially began its journey in 2006. Thanks to 30 plus years of solid experience, our yearly output amounts to more than 2 billion pieces. At present, our factory occupies 37,000 square meters and has a workforce of 450. We have secured ISO9001, ISO14001, IATF16949, and CNAS labs certifications, and our comprehensive quality system is among the very best.
Yida Rubber Has Gained Global Customer and Market Recognition.
We count by our side some of the world's famous companies such as SMC, Omron and Siemens. Since SMC recognized us as "2023 Excellent Supplier" while Omron honored us with the "Global Strategic Partner Certificate" as well, our customers show great trust in us. Besides that, our sealing rings also found their way into Southeast Asia and Europe markets.
Our Participation in Exhibitions and Events.
At the 14th Shanghai International Long-Term Energy Storage Technology Conference held in June 2025, our company actively contributed to the event by presenting our technologically advanced products that have high resistance to temperature extremes and sealing performance thereby covering the scenarios of flow batteries and hydrogen energy storage. Being surrounded by 927 exhibitors representing the whole world, we revealed our accumulated capabilities and technical knowledge in the localization of sealing elements.
Our Services and Guarantees.
Our smalles order quantity is 1,000 pcs. Normally orders with standard sizes can be shipped in 15 days. The packaging method is using self-sealing bags and cartons. Regarding freight, we can support land, sea and air. A free sample could be offered (buyer needs to pay shipping cost), and price reduction is possible when ordering in bulk.
FAQ:
1. How do you guarantee that your high temp silicone seal ring maintains good elasticity under long-term high-temperature conditions?
We utilize quality fumed silica and other silicone rubber materials that can withstand high temperatures. Our seal rings are considerably more stable in heat resistance and have a lower compression set than ordinary ones.
2. Are high temp silicone O rings suitable for use in steam environments?
Yes. Our high-temp silicone O-rings can be used in steam ovens, steam equipment, high-temperature hot water systems, sterilization equipment, and other humid and hot environments.
