Custom Rubber O Rings

Molded rubber O rings are made to your specifications on demand, with rapid shipping available.

Custom Molded Rubber O Rings

o ring seal

Flexiparts Plastic delivers custom rubber o-rings that ensure effective sealing and pressure resistance for dynamic and static applications. Our o-rings are made to withstand a variety of conditions—from extreme temperatures to chemical exposure. With expertise in precision molding and material selection, we guarantee consistent quality, cost efficiency, and reliable delivery, making us your dependable partner for sealing solutions.

Getting custom rubber o ring is simple: just send us your design or sample, and we’ll handle the O ring mold design, material selection, quoting, and production process. You can always reach us via email, phone, or through our website.

Custom O Ring Seals That Meet Your Exact Needs

Whether you need custom molded O-rings, custom silicone O-rings, or NBR rubber O-rings, our team ensures every detail—from tolerance to durometer—is precisely matched to your specs.
*Please note: The molded rubber parts shown are not in stock — they are custom examples that show Flexiparts Plastic’s capabilities.

LET’S START A NEW CUSTOM RUBBER PARTS

Tell us your requirement, our engineers help you make it a reality!

Design Tips for Custom Rubber O Rings

When designing custom O ring seals, be sure to consider groove geometry, material compatibility, compression rate, and environmental conditions. Choosing the right compound—such as NBR, EPDM, Silicone, or FFKM—ensures the O ring withstands specific temperatures, chemicals, and mechanical stress. We help customers evaluate custom O ring shapes and custom sizes to optimize sealing efficiency.

Rubber O Ring Manufacturing Methods

  • Compression Molding
  • Transfer Molding
  • Injection Molding

Material

Our custom rubber O rings are available in various high-performance elastomers, including:

  • Nitrile Rubber (NBR)
  • Silicone (MVQ)
  • Fluorocarbon (FKM)
  • Ethylene Propylene Diene Monomer (EPDM)
  • Perfluoroelastomer (FFKM)
  • Neoprene (CR)

Custom O-rings provide precise sealing performance, preventing leaks and contamination in static or dynamic applications. A reliable custom O-ring manufacturer ensures the right material, hardness, and size for each environment.

  • Excellent sealing under high pressure and temperature
  • Resistance to oil, fuel, water, and chemicals
  • Long-lasting durability and minimal maintenance
  • Flexible size and shape customization
  • Extended service life and enhanced system reliability
  • Cost-effective for both prototypes and high-volume orders

Our rubber O rings are used across multiple industries and environments:

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive sealing
  • Medical devices
  • Aerospace and defense
  • Plumbing systems
  • Food-grade machinery

Related FAQs of Custom O Rings

Absolutely. We provide custom-molded O-rings in heat-resistant materials, tailored to your dimensions, hardness, and specific operating conditions.
Yes, we specialize in custom molded O rings tailored to your exact size, cross-section, and shape requirements.
Key factors include operating temperature, pressure, media (fluid or gas), movement type (static or dynamic), and material compatibility. We can help you select the most suitable compound and design.
Simply send us your drawing or sample through our website, email, or phone, and we’ll handle mold design and quoting.
O-ring lifespan varies based on material, application conditions, and maintenance. High-quality O-rings in properly matched environments can last several years without failure.
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What Our Customers Say

Check what our customers say about us, why they like to work with us!
Flexiparts pays attention to detail. We’re happy with their plastic and rubber molds. Communication is fast and efficient, and their support is great.
edward
Edward
France
Working with Flexiparts has been great. The injection-molded parts are always top quality. We really appreciate your professionalism with delivery and project management
bella
Bella
US