Our Solutions
Conductive O-Rings
EMI O-rings are electrically conductive gaskets that provide constant shielding against electromagnetic interference (EMI), disturbances that can disrupt electronic components, modules, and systems. These EMI shielding gaskets are made of specialty materials that are packed with metallic or metal-coated particles. Silicones, a family of synthetic elastomers, withstand a wide range of temperatures and provide environmental sealing. The metallic or metal-coated particles in EMI silicones and Flurosilicones provide electrical conductivity. O-Rings are fabricated to the customer’s dimensional requirements.Key Advantages of O-Rings
- Simple, cost-effective sealing solution
- Compatible with static and dynamic sealing
- Available in thousands of sizes (AS568, ISO, custom)
- Works across wide ranges of temperature, chemical compatibility, & durometer
- Easy to install and replace
O-Ring Material Selection Guide
Selecting the correct material is critical to ensure sealing reliability. Below is an in-depth comparison of major elastomers used for O-rings:EPDM (Ethylene Propylene Diene Monomer)
Key Properties
- Excellent resistance to weathering, ozone, UV, steam, and polar fluids
- Good flexibility and aging characteristics
Common Applications
- Water systems & potable water
- HVAC
- Steam handling systems
- Pharmaceutical/food-grade systems (when peroxide-cured
- Outdoor use / weather exposure
Temperature Range
- -50°C to +150°C (-58°F to +302°F)
Perfluoroelastomers (FFKM, e.g., Kalrez®, Chemraz®)
Key Properties
- Highest chemical resistance of any elastomer (nearly universal chemical compatibility)
- Provides sealing capabilities similar to PTFE but with elasticity
Common Applications
- Semiconductor manufacturing
- Chemical processing
- Pharmaceutical & biotech
- Aerospace & defense
- Harsh, high-temp sealing environments
Temperature Range
- -15°C to +327°C (5°F to +620°F), depending on compound
Fluorosilicone (FVMQ)
Key Properties
- Similar to silicone but with improved fuel and oil resistance
- Remains flexible at low temperatures
- Excellent UV, ozone, and weather resistance
Common Applications
- Aerospace fuel systems
- Military and defense
- Automotive turbo systems
- Jet fuels & aviation fluids
Temperature Range
- -60°C to +200°C (-76°F to +392°F)
FKM (Fluorocarbon, Viton®)
Key Properties
- Excellent chemical, fuel, and oil resistance
- Excellent high-temperature performance
- Good compression set resistance
Common Applications
- Automotive & aerospace fuel systems
- Oil & gas
- Industrial machinery
- Vacuum systems
- Chemical processing
Temperature Range
- -20°C to +205°C (-4°F to +401°F)
Special grades up to 300°C (572°F)
Nitrile Butadiene Rubber (NBR / Buna-N)
Key Properties
- Excellent resistance to oils, fuels, and hydrocarbons
- Good mechanical strength and abrasion resistance
- Most common and cost-effective O-ring material
Common Applications
- Hydraulic systems
- Pneumatics
- Automotive fuel & oil handling
- General industrial use
Temperature Range
- -40°C to +120°C (-40°F to +248°F)
PTFE (Polytetrafluoroethylene, Teflon®)
Key Properties
- Chemically inert to nearly all fluids
- Lowest friction coefficient of any solid material
- Outstanding temperature resistance
- Does not require lubrication
Common Applications
- Chemical processing
- Food & pharmaceutical
- Cryogenic applications
- High-pressure environments
- Semiconductors
- Static seals where extrusion resistance is critical
Temperature Range
- -200°C to +260°C (-328°F to +500°F)
Key Advantages of O-Rings
| Material | Temperature Range (°C) | Fuel/Oil Resistance | Chemical Resistance | Common Uses |
| NBR | -40 to +120 | Good | Fair | Automotive, hydraulics |
| EPDM | -50 to +150 | Poor | Good (polar fluids) | Water, steam, outdoor |
| FKM (Viton) | -20 to +205 | Excellent | Good | Fuel systems, chemicals |
| FVMQ (Fluorosilicone) | -60 to +200 | Good | Fair | Aerospace fuel systems |
| PTFE | -200 to +260 | Excellent | Excellent | Chemical processing, high temp |
| FFKM | -15 to +327 | Excellent | Best available | Semiconductor, aerospace |
Material Comparison Table
Key Advantages of O-Rings
| Material | Temperature Range (°C) | Fuel/Oil Resistance | Chemical Resistance | Common Uses |
| NBR | -40 to +120 | Good | Fair | Automotive, hydraulics |
| EPDM | -50 to +150 | Poor | Good (polar fluids) | Water, steam, outdoor |
| FKM (Viton) | -20 to +205 | Excellent | Good | Fuel systems, chemicals |
| FVMQ (Fluorosilicone) | -60 to +200 | Good | Fair | Aerospace fuel systems |
| PTFE | -200 to +260 | Excellent | Excellent | Chemical processing, high temp |
| FFKM | -15 to +327 | Excellent | Best available | Semiconductor, aerospace |
Choosing the Right O-Ring
- Temperature exposure
- Chemical compatibility
- Compression & pressure range
- Dynamic vs static sealing
- Regulatory compliance (FDA, NSF, MIL-spec, ISO)
- Lifetime and replacement interval
Industries Served
- Aerospace & defense
- Semiconductor
- Medical devices
- Automotive / EV
- Chemical processing
- Oil & gas
- HVAC / plumbing
- Marine / offshore
- Electronics / EMI shielding (with conductive O-rings)
Optional Add-Ons
- Conductive O-Rings/EMI-shielding
- Metal-detectable O-rings
- PTFE-encapsulated O-rings
- FDA & USP-Class VI compounds
- Custom colors and sizes
- Cleanroom packaging
Need Custom O-Rings?
We provide precision-cut O-rings in both standard and custom configurations using advanced CNC cutting and measurement systems such as Zünd and Keyence. Whether you need prototype quantities or full production, we can help with:- Rapid turnaround
- Custom or non-standard sizes
- Small batch manufacturing
- Material selection support
- Engineering drawings & measurement reports
Our Solutions
Conductive O-Rings
EMI O-rings are electrically conductive gaskets that provide constant shielding against electromagnetic interference (EMI), disturbances that can disrupt electronic components, modules, and systems.
These EMI shielding gaskets are made of specialty materials that are packed with metallic or metal-coated particles. Silicones, a family of synthetic elastomers, withstand a wide range of temperatures and provide environmental sealing. The metallic or metal-coated particles in EMI silicones provide electrical conductivity. O-Rings are fabricated to the customer’s dimensional requirements.
Material / Product Types
Applications
Material / Product Types
Material / Product Types
Standard solid Conductive O-ring materials include: Conductive Fluorosilicone, Conductive EPDM, Conductive Neoprene. These can be filled with:
- Nickel Coated Graphite
- Silver-Plated Copper
- Silver-Plated Aluminum
- Silver-Plated Nickel
- Silver Plated Graphite
Applications
Applications
- Aerospace
- Communications
- Defense
- Automotive
- Medical
Proficiencies
Performance
Proficiencies
Proficiencies
Proven Knowledge
Deep engineering capabilities with expert knowledge of EMI RFI specifications
Field Proven
1,000’s of designs integrated into battle-harsh and commercially challenging environments
Proven Track Record
Orders delivered on time and to specification
Performance
Performance
Satisfying Stringent Demands
Meeting requirements for mission critical applications
Product of Choice
For industries such as aerospace, rugged commercial and automotive
Collaborating
From project concept until completion