Silicone Gasket 70 – High-Performance 70 Durometer Silicone Sealing Solution
If you're looking for a silicone gasket that can handle extreme temperatures, ozone, UV exposure, and demanding industrial environments, the Silicone Gasket 70 (70 Shore A Durometer) is one of the most reliable options on the market.
Engineered for stable performance even when physical stress is not the primary concern, this gasket offers a great balance of durability, flexibility, and long-term sealing power. It's widely used across automotive, electronics, machinery, home appliances, aviation, and construction sectors.
As a professional China Silicone Gasket 70 manufacturer and exporter, Xiamen Jinshun Sealing Technology Co., Ltd. provides OEM/ODM customization, competitive pricing, stable lead times, and consistent material quality that meets international standards including ASTM, MIL-R, AMS, and A-A-59588.

Why Silicone Gasket 70?
Think of the 70 durometer silicone gasket as the "reliable all-rounder" for sealing tasks. It's firm enough to maintain shape under pressure yet elastic enough to create a leak-proof seal in harsh environments.
Key Advantages
- Wide temperature resistance: -76°F to 451°F (-60°C to 232°C)
- Excellent UV, ozone, and weather resistance
- Non-toxic and chemically inert
- Stable hardness for mechanical sealing applications
- Customizable color, size, hardness, and shape
- Ideal for OEM/ODM industrial projects

Technical Specifications - Silicone Gasket 70
Material Performance Properties
| Property | Specification |
|---|---|
| Material Type | Silicone Rubber (70 Durometer) |
| Color | Red (other colors customizable) |
| Hardness | 70 ± 5 Shore A |
| Tensile Strength | 750 psi |
| Elongation at Break | 350% |
| Tear Strength (Die B) | 100 ppi |
| Surface Finish | Smooth |
| Service Temperature | -76°F to 451°F (-60°C to 232°C) |
| Standards Compliance | ZZR-765 CL2A/B GR 6 / ASTM D2000 M1GE705 / A-A-59588 2A & 2B Grade 70 / AMS-3304 |
Customization Options
| Parameter | Details |
|---|---|
| Color Options | Black, Red, Transparent, White, Green, or Custom |
| Size | Fully Customizable |
| Hardness Range | Shore A 30–90 |
| Technology | Compression, Injection Molding, Extrusion |
| Tolerance | ±0.05 mm |
| Working Temp | -60°C to 350°C (material dependent) |
| MOQ | 100 pcs |
| Sample | Free (from stock) |
| Production Basis | Customer Drawings / Samples |
| Service | OEM / ODM / Custom Engineering |
Typical Applications
Silicone Gasket 70 is widely used in systems that require durability and long-term sealing:
- Automotive: engines, pumps, lighting assemblies
- Electronics: enclosures, waterproof seals, high-temperature devices
- Mechanical Equipment: vibration dampening, sealing interfaces
- Aviation & Aerospace: lightweight sealing components
- Home Appliances: coffee machines, ovens, HVAC systems
- Construction: waterproof seals, expansion joints
- Office Equipment: printers, scanners, industrial electronics
FAQs – Silicone Gasket 70
1. What does "70 durometer" mean?
It refers to the hardness level of the silicone rubber. 70 Shore A is considered medium-firm-ideal for sealing applications that need stability and durability.
2. Can Silicone Gasket 70 withstand high temperatures?
Yes. It performs reliably from -76°F to 451°F, making it suitable for both extreme cold and high-heat environments.
3. Do you offer custom molds or OEM production?
Absolutely. We provide full OEM/ODM services, including custom dimensions, colors, and material hardness based on your drawings or samples.
4. Are your silicone gaskets compliant with international standards?
Yes, our Silicone Gasket 70 meets ASTM D2000, MIL-R, A-A-59588, and AMS-3304 requirements.
5. Can I get a free sample?
Yes, standard samples are free from stock. Custom samples can also be arranged.
6. What industries commonly use 70 durometer silicone gaskets?
Automotive, electronics, mechanical equipment, aerospace, household appliances, and many more.
Ready to source high-quality Silicone Gasket 70 from a trusted manufacturer?
👉 Get a fast quote today!
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👉 Partner with us for OEM/ODM silicone gasket projects
Contact Xiamen Jinshun Sealing Technology Co., Ltd.
Your reliable China silicone gasket manufacturer for global distribution and wholesale partnerships.










