Custom 5mm Flat Waterproof Rubber ORings Vacuum Tube Seals China Factory Suppliers

Leading China factory and suppliers of premium 5mm flat waterproof rubber O-rings for vacuum tubes. ISO9001 certified seals in NBR, Silicone, EPDM, and FKM with heat and ozone resistance. Custom sizes available from our Hebei manufacturing base.

SupplierShijiazhuang Beike Sealing Technology Co.,Ltd.www.beikesealing.com

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About this product

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Our premium 5 mm thickness flat waterproof rubber O-rings are specifically engineered for vacuum tube applications, providing an airtight and leak-proof seal to ensure system integrity. Manufactured with high-precision molding, these flat seals are designed to withstand rigorous vacuum pressures while maintaining their structural shape, making them ideal for laboratory, industrial, and medical equipment.

Available in a wide range of high-performance elastomers including NBR, Silicone, EPDM, and FKM, our rubber O-rings are tailored to meet specific environmental challenges—from extreme temperature fluctuations to aggressive chemical exposure. With ISO9001 and TS16949 certifications, we guarantee professional-grade reliability and consistent quality for every custom or standard dimension requirement.

Detailed Parameters

Thickness	5 mm (Flat Profile)	Material Options	NBR, Silicone, EPDM, FKM, FFKM, CR, PU, PTFE
Hardness Range	30-90 Shore A	Certification	ISO9001, TS16949
Standard Sizes	M2, M3, M8, M10 (Custom available)	Application	Vacuum Tubes, Waterproof Sealing
Origin	Shijiazhuang, Hebei, China	Manufacturing Process	Compression Mold / CNC Machining
Packing	PP bag inside, Carton box outside	Shipping Methods	Air, Sea, Express Mail

Key Advantages

Superior Waterproofing

Engineered for absolute vacuum sealing, preventing any moisture or air leakage in critical tube connections.

Rapid Delivery

Fast turnaround: 2-3 days for in-stock items and 5-14 days for custom molded production.

Material Versatility

From Nitrile for oils to FKM for chemicals, we provide the perfect material for your specific media.

Precision Engineering

Equipped with free CNC machining centers for high-speed mold opening and extreme dimensional accuracy.

Strict Quality Control

3-stage quality checking process with 100% pass rate requirement before shipment.

OEM/ODM Capability

Fully customized sizes and hardness specifications to match your unique technical blueprints.

Product Gallery

Management Platforms

Raw Material Sourcing

Strategic partnerships with DuPont and JSR to ensure high-stability polymer properties.

Mold Development

Advanced CNC machining center for high-speed mold opening and precise geometry.

Quality Assurance

Independent Q.C. department conducting 3-times quality checking per batch.

Customization Service

Comprehensive OEM/ODM support with free samples available for technical validation.

Logistics Management

Efficient shipping from Tianjin and Beijing ports via Air, Sea, or Express Mail.

After-Sales Support

Professional technical response within 48 hours to resolve any application issues.

Investment Return Comparison

Material Type	Temperature Range	Best Application Use
NBR (Nitrile)	-40ºF to 250ºF	Petroleum Oils, Gasoline, Diesel
EPDM	-60ºF to 300ºF	Steam, UV Exposure, Brake Fluids
FKM (Viton®)	0ºF to 390ºF	High-temp Petroleum, Silicone Oils
Silicone (VMQ)	-90ºF to 430ºF	Vegetable Oil, Water, Ozone
FFKM	0ºF to 600ºF	Most Extreme Chemical Media

Frequently Asked Questions

Q: How do I choose the right rubber material for my vacuum tube seal?

The choice depends on your operating temperature and the media being sealed. For general oil resistance, NBR is best; for extreme heat or chemicals, FKM or FFKM is recommended; for weather and steam, EPDM is the ideal choice.

Q: Can you manufacture O-rings with custom thickness other than 5 mm?

Yes, we specialize in custom rubber parts. We can produce flat seals and O-rings in any thickness or diameter based on your technical drawings using our CNC machining and compression molding facilities.

Q: What is the lead time for custom molded rubber gaskets?

If molding is required, the lead time is typically 5-7 days. If the product is out of stock but doesn't require new molding, it takes 8-14 days. In-stock items ship within 2-3 days.

Q: Do you provide samples for quality verification before mass production?

Yes, free samples are available. For international clients, we ask that you cover the freight costs, which can be handled via your courier account (FedEx/DHL/UPS) or transferred to us in advance.

Q: What quality certifications do your rubber products hold?

Our manufacturing processes are certified under ISO9001 and TS16949, ensuring that our rubber parts meet international automotive and industrial quality standards.

Q: Which shipping ports do you typically use for export?

We primarily ship our products through Tianjin and Beijing ports, providing flexible transport modes including air freight, sea freight, and express mail to ensure timely global delivery.