Flat Rubber Gasket
Flat rubber gaskets are widely used sealing solutions designed to prevent leakage between flat or flanged surfaces in pipelines, equipment, and machinery. These gaskets provide uniform compression, excellent chemical resistance, and durability under static or dynamic loading conditions.
1. Product Overview
Flat rubber gaskets are cut from sheets of elastomeric material and shaped to the required dimensions. They create a reliable seal by filling surface irregularities and providing a compressible barrier between mating surfaces.
- Suitable for liquid, gas, and steam sealing
- Temperature resistance: -50°C to +200°C depending on material
- Chemical and corrosion resistance for industrial applications
- Customizable thickness, size, and hardness to meet specific needs
Key Advantage: Flat gaskets provide uniform sealing pressure over a wide surface area, reducing leakage risk and enhancing reliability.
2. Common Materials
| Material | Temperature Range | Chemical Resistance | Applications |
|---|---|---|---|
| NBR (Nitrile) | -30°C to +120°C | Oil, grease, fuels | Hydraulic and automotive systems |
| EPDM | -50°C to +150°C | Water, steam, acids, alkalis | Plumbing, HVAC, steam systems |
| Silicone (VMQ) | -60°C to +230°C | Excellent thermal stability | Food, pharmaceutical, high-temperature sealing |
| FKM (Viton®) | -20°C to +200°C | Strong chemical resistance | Chemical process equipment |
Selection Tip: Choose material based on operating temperature, fluid type, and chemical compatibility for optimal seal performance.
3. Performance Testing
3.1 Compression Set Test
- Measure permanent deformation after prolonged compression
- Ensures gasket maintains sealing force over time
3.2 Leak Test
- Test under working pressure and temperature conditions
- Detect potential leakage paths and verify seal integrity
3.3 Chemical Resistance Test
- Expose gasket to media it will contact during service
- Check for swelling, cracking, or deterioration
4. Installation and Maintenance
- Ensure mating surfaces are clean and free of debris
- Align gasket properly to avoid twisting or over-compression
- Follow recommended bolt torque to achieve uniform compression
- Inspect gaskets periodically and replace if signs of wear, cracking, or chemical damage appear
Maintenance Tip: Avoid repeated disassembly under high pressure to extend gasket service life.
About Us
Best Seal provides custom flat rubber gaskets in NBR, EPDM, Silicone, and FKM. We offer precise sizes, hardness options, and OEM support for pipelines, machinery, and equipment requiring durable, leak-proof seals.
- Custom outer/inner diameter and thickness
- Wide range of elastomer materials for various applications
- ISO 9001 certified for consistent quality
- Fast production and delivery for industrial requirements
Packaging & Shipping
📦 Packaging Options：
Standard Packaging:
- Sealed PE bags
- Inner cartons with protective layers
- Pallet packing for bulk shipment
Custom Packaging (Available on request):
- Small pouch / small bag packing
- Individual heat-sealed plastic bag with cardboard backing
- Individual bubble-wrap protection
- Light-proof black packaging
- Customized labeling or barcodes
🚚 Shipping Methods
- DHL / FedEx / UPS express
- Air freight for urgent orders
- Sea freight for bulk orders
- FOB / CIF / DDP trade terms available
Certification
Our gaskets comply with major international standards, including:
ISO 9001, ASTM D2000, FDA, NSF, WRAS, RoHS, REACH, CE, UL.
All materials are fully tested for physical, chemical, and hygienic performance to ensure long-term reliability in sanitary and industrial systems.
Medical rubber gaskets provide stable, clean, and safe sealing performance for the most demanding healthcare environments, supporting long-term reliability and product integrity.
Contact US：
Xiamen Best Seal Imp and Exp Co.,Ltd
Tel: +86-592-5782315
Mob: +8618950159396
Email: yunying2@bestsealhk.com
Add: Unit 522-525, Gaodian Road 6#, Huli District, Xiamen, China
Hot Tags: flat gasket, China flat gasket suppliers, manufacturers, factory
