High Temperature Gaskets and Seals Manufacturer in China

Custom Industrial Heat-Resistant Sealing Solutions up to 2300°F

When equipment operates under extreme heat, standard sealing materials simply fail. That's where high temperature gaskets and seals make the difference.

At Xiamen Jinshun Sealing Technology Co., Ltd., we manufacture precision-engineered high temperature gasket materials and custom sealing solutions designed to perform reliably from 177°C (350°F) up to 1260°C (2300°F), depending on material selection.

Established in 2002, Jinshun is an ISO 9001:2015 and ISO 14001:2015 certified manufacturer specializing in custom rubber seals, silicone gaskets, O-rings, and high-performance industrial sealing components. We support OEM and ODM projects for global industries including automotive, electronics, food equipment, aerospace, machinery, and energy systems.

If your application involves heat, exhaust gases, combustion, aggressive chemicals, or high-pressure steam, we engineer sealing systems that last.

High temperature environments create three main sealing challenges:

• Thermal expansion and contraction
• Material degradation under continuous heat
• Fluid and chemical attack

Our heat resistant gaskets and seals are developed to maintain compression set resistance, sealing integrity, and mechanical stability even in severe operating conditions.

We provide a wide range of industrial-grade elastomers and advanced materials. Each material is selected based on operating temperature, chemical exposure, pressure level, and mechanical requirements.

Elastomer-Based High Temperature Gaskets

For extreme environments beyond elastomer capability:

Compressed Non-Asbestos Gaskets

Temperature limit: 750°F – 950°F

• SBR-based (water, steam, air)
• NBR-based (oil, fuel, solvents)
• Premium NBR for mild acids & alkalis
• Carbon fiber ultra-high-temp grades

Available thickness: 1/64" to 1/4"

Fiberfrax® Ceramic Fiber Gaskets

Temperature resistance: 1300°F – 2300°F

• Alumina-silica composition
• Low thermal conductivity
• Thermal shock resistance
• Lightweight & die-cuttable

Ideal for furnaces, refractory systems, and exhaust applications.

PTFE (Teflon®) Gaskets

Temperature limit: up to 600°F

• Excellent chemical resistance
• Suitable for aggressive media
• Expanded PTFE for rough surfaces
• Metal-inserted options for higher pressure

Thickness: 1/32" to 1/4"

Flexible Graphite & Carbon Gaskets

Temperature resistance: up to 5000°F (in non-oxidizing conditions)

• Exceptional corrosion resistance
• Withstands acids, alkalis, salts
• Laminated with stainless steel inserts available
• High-pressure capable

Common in power plants and chemical processing.

Nomex^® 410 Gaskets

Temperature limit: 428°F

• High dielectric strength
• Mechanical toughness
• Used in electrical insulation applications

Kapton^® Polyimide Film Gaskets

Continuous: 428–464°F | Intermittent: 752°F

• UL-94 V-0 flame rating
• Excellent dielectric properties
• Used in PCB assemblies and electronics

Thickness range: 0.0003" to 0.005"

At Jinshun, we do more than supply materials. We engineer solutions.

Manufacturing Methods:

• Compression molding
• Die-cutting
• CNC gasket cutting
• Extrusion
• Laminated composite fabrication

Customization Options:

• Thickness: 0.3mm – 6mm+
• Hardness: Shore A 15–90
• Metal inserts available
• Adhesive backing optional
• Custom shapes based on 2D/3D drawings

We produce gaskets precisely according to your tolerance requirements and functional specifications.

Our high temperature gaskets and seals are widely used in:

• Automotive exhaust systems
• Industrial boilers and steam systems
• Chemical processing plants
• Food equipment and ovens
• Aerospace components
• Electronics and PCB thermal insulation
• Energy and power generation

• Over 20 years manufacturing experience
• ISO 9001 & ISO 14001 certified production
• Raw materials compliant with ROHS, REACH, PAHS
• Certifications including FDA, LFGB, NSF, WRAS, UL
• OEM & ODM support
• On-time delivery (standard lead time: 10–15 days)
• Competitive factory pricing

We work as a long-term strategic partner for global industrial brands.

Q1: What is the highest temperature your gaskets can handle?

Depending on material selection, we offer solutions rated from 350°F to 2300°F, and graphite materials can tolerate even higher under specific conditions.

Q2: Can you manufacture custom high temperature gaskets from drawings?

Yes. Send us your 2D or 3D drawings and operating parameters, and our engineers will recommend the best material.

Q3: How do I choose between silicone, Viton, PTFE, and graphite?

Selection depends on:

• Temperature range
• Chemical exposure
• Pressure level
• Required flexibility

Our engineering team provides material comparison guidance.

Q4: Do you provide small batch production?

Yes. We support both prototype development and mass production.

Q5: Are your materials certified?

Yes. Many materials meet FDA, LFGB, NSF, WRAS, UL, and environmental compliance standards.

Contact now

Looking for a reliable high temperature gaskets and seals manufacturer in China?

Send us your operating temperature, pressure data, and technical drawings today. Our engineers will help you select the right material and design for long-term performance.

📩 Email: ywb6@jinshunxm.com
🌐 Website: https://www.jinshunsealing.com
📦 OEM & ODM Projects Welcome

Let's build a sealing solution that performs under pressure - and heat.