Introduction
Ethylene Propylene (EPDM) O-Rings (0.040–0.070 Section) are high-quality elastomer sealing components designed for reliable performance in vacuum, fluid handling, and industrial sealing applications. Known for their excellent resistance to heat, ozone, weathering, and a wide range of chemicals, EPDM O-rings are widely used in high-vacuum (HV) systems where stable, long-term sealing is required.
Detailed Description
EPDM O-rings are manufactured from carefully compounded ethylene propylene rubber to ensure consistent elasticity, dimensional accuracy, and sealing performance. The 0.040–0.070 inch cross-section range covers many commonly used groove designs in vacuum flanges, valve stems, and sealing interfaces, providing flexibility for both standard and custom assemblies.
EPDM exhibits outstanding resistance to aging, UV exposure, steam, and hot water, making it suitable for applications involving elevated temperatures and outdoor or chemically aggressive environments. While not recommended for hydrocarbon oils or fuels, EPDM is highly compatible with water-based media, polar solvents, acids, and alkalis—an advantage in many vacuum and process systems.
In vacuum service, EPDM O-rings offer low compression set and stable sealing force, supporting repeatable assembly and extended service life in HV applications.
Applications
High-vacuum (HV) sealing interfaces
Vacuum valves, flanges, and manifolds
Chemical processing and fluid handling systems
Water, steam, and polar solvent applications
Laboratory, analytical, and industrial equipment
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Material | EPDM (Ethylene Propylene) | Chemical & weather resistance |
| Cross Section | 0.040 – 0.070 in | Fits common groove designs |
| Hardness | ~70 Shore A (typical) | Balance of sealing & durability |
| Temperature Range | −50 °C to +150 °C (typical) | Suitable for elevated temperatures |
| Chemical Resistance | Acids, alkalis, water, steam | Broad compatibility |
| Vacuum Use | High Vacuum (HV) | Reliable elastomer sealing |
Comparison with Other Elastomer O-Rings
| Material | Key Advantage | Typical Application |
|---|---|---|
| EPDM O-Ring | Heat & chemical resistance | Water/chemical HV systems |
| Viton® (FKM) | Hydrocarbon & solvent resistance | General vacuum use |
| Buna-N (NBR) | Cost-effective | Oils & fuels |
| Silicone | Extreme temperature flexibility | Low-force sealing |
FAQ
| Question | Answer |
|---|---|
| Are EPDM O-rings suitable for high vacuum? | Yes, they are commonly used in HV systems with elastomer seals. |
| Can EPDM O-rings handle steam or hot water? | Yes, EPDM has excellent resistance to steam and hot water. |
| Are these compatible with oils or fuels? | No, EPDM is not recommended for hydrocarbon oils or fuels. |
| Can custom sizes be supplied? | Yes, custom diameters and tolerances are available on request. |
| How are O-rings packaged? | Cleaned and packed to prevent contamination and deformation. |
Packaging
Our EPDM O-Rings (0.040–0.070 Section) are carefully cleaned, counted, and sealed in protective packaging to maintain elasticity and cleanliness. Export-grade cartons ensure safe storage and international shipment.
Conclusion
Ethylene Propylene (EPDM) O-Rings (0.040–0.070 Section) provide dependable sealing performance, excellent chemical resistance, and long service life for high-vacuum and industrial applications. With consistent quality and a wide range of standard sizes, they are a reliable choice for demanding sealing environments.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
Ordering Table
| Drawing | Reference | O-Ring Size | O-Ring Material | O-Ring OD | O-Ring ID | O-Ring Cross Section | O-Ring Color | Part Number |
| O-ring Seals, Ethylene Propylene (EPDM) | 001 | 5600-70 EPDM | 0.109 | 0.029 | 0.040 | Black | O-E001 |
| O-ring Seals, Ethylene Propylene (EPDM) | 002 | 5600-70 EPDM | 0.142 | 0.042 | 0.050 | Black | O-E002 |
| O-ring Seals, Ethylene Propylene (EPDM) | 003 | 5600-70 EPDM | 0.176 | 0.056 | 0.060 | Black | O-E003 |
| O-ring Seals, Ethylene Propylene (EPDM) | 004 | 5600-70 EPDM | 0.210 | 0.070 | 0.070 | Black | O-E004 |
| O-ring Seals, Ethylene Propylene (EPDM) | 005 | 5600-70 EPDM | 0.241 | 0.101 | 0.070 | Black | O-E005 |
| O-ring Seals, Ethylene Propylene (EPDM) | 006 | 5600-70 EPDM | 0.254 | 0.114 | 0.070 | Black | O-E006 |
| O-ring Seals, Ethylene Propylene (EPDM) | 007 | 5600-70 EPDM | 0.285 | 0.145 | 0.070 | Black | O-E007 |
| O-ring Seals, Ethylene Propylene (EPDM) | 008 | 5600-70 EPDM | 0.316 | 0.176 | 0.070 | Black | O-E008 |
| O-ring Seals, Ethylene Propylene (EPDM) | 009 | 5600-70 EPDM | 0.348 | 0.208 | 0.070 | Black | O-E009 |
| O-ring Seals, Ethylene Propylene (EPDM) | 010 | 5600-70 EPDM | 0.379 | 0.239 | 0.070 | Black | O-E010 |
| O-ring Seals, Ethylene Propylene (EPDM) | 011 | 5600-70 EPDM | 0.441 | 0.301 | 0.070 | Black | O-E011 |
| O-ring Seals, Ethylene Propylene (EPDM) | 012 | 5600-70 EPDM | 0.504 | 0.364 | 0.070 | Black | O-E012 |
| O-ring Seals, Ethylene Propylene (EPDM) | 013 | 5600-70 EPDM | 0.566 | 0.426 | 0.070 | Black | O-E013 |
| O-ring Seals, Ethylene Propylene (EPDM) | 014 | 5600-70 EPDM | 0.629 | 0.489 | 0.070 | Black | O-E014 |
| O-ring Seals, Ethylene Propylene (EPDM) | 015 | 5600-70 EPDM | 0.691 | 0.551 | 0.070 | Black | O-E015 |
| O-ring Seals, Ethylene Propylene (EPDM) | 016 | 5600-70 EPDM | 0.754 | 0.614 | 0.070 | Black | O-E016 |
| O-ring Seals, Ethylene Propylene (EPDM) | 017 | 5600-70 EPDM | 0.816 | 0.676 | 0.070 | Black | O-E017 |
| O-ring Seals, Ethylene Propylene (EPDM) | 018 | 5600-70 EPDM | 0.879 | 0.739 | 0.070 | Black | O-E018 |
| O-ring Seals, Ethylene Propylene (EPDM) | 019 | 5600-70 EPDM | 0.941 | 0.801 | 0.070 | Black | O-E019 |
| O-ring Seals, Ethylene Propylene (EPDM) | 020 | 5600-70 EPDM | 1.004 | 0.864 | 0.070 | Black | O-E020 |
| O-ring Seals, Ethylene Propylene (EPDM) | 021 | 5600-70 EPDM | 1.066 | 0.926 | 0.070 | Black | O-E021 |
| O-ring Seals, Ethylene Propylene (EPDM) | 022 | 5600-70 EPDM | 1.129 | 0.989 | 0.070 | Black | O-E022 |
| O-ring Seals, Ethylene Propylene (EPDM) | 023 | 5600-70 EPDM | 1.191 | 1.051 | 0.070 | Black | O-E023 |
| O-ring Seals, Ethylene Propylene (EPDM) | 024 | 5600-70 EPDM | 1.254 | 1.114 | 0.070 | Black | O-E024 |
| O-ring Seals, Ethylene Propylene (EPDM) | 025 | 5600-70 EPDM | 1.316 | 1.176 | 0.070 | Black | O-E025 |
| O-ring Seals, Ethylene Propylene (EPDM) | 026 | 5600-70 EPDM | 1.379 | 1.239 | 0.070 | Black | O-E026 |
| O-ring Seals, Ethylene Propylene (EPDM) | 027 | 5600-70 EPDM | 1.441 | 1.301 | 0.070 | Black | O-E027 |
| O-ring Seals, Ethylene Propylene (EPDM) | 028 | 5600-70 EPDM | 1.504 | 1.364 | 0.070 | Black | O-E028 |
| O-ring Seals, Ethylene Propylene (EPDM) | 029 | 5600-70 EPDM | 1.629 | 1.489 | 0.070 | Black | O-E029 |
| O-ring Seals, Ethylene Propylene (EPDM) | 030 | 5600-70 EPDM | 1.754 | 1.614 | 0.070 | Black | O-E030 |
| O-ring Seals, Ethylene Propylene (EPDM) | 031 | 5600-70 EPDM | 1.879 | 1.739 | 0.070 | Black | O-E031 |
| O-ring Seals, Ethylene Propylene (EPDM) | 032 | 5600-70 EPDM | 2.004 | 1.864 | 0.070 | Black | O-E032 |
| O-ring Seals, Ethylene Propylene (EPDM) | 033 | 5600-70 EPDM | 2.129 | 1.989 | 0.070 | Black | O-E033 |
| O-ring Seals, Ethylene Propylene (EPDM) | 034 | 5600-70 EPDM | 2.254 | 2.114 | 0.070 | Black | O-E034 |
| O-ring Seals, Ethylene Propylene (EPDM) | 035 | 5600-70 EPDM | 2.379 | 2.239 | 0.070 | Black | O-E035 |
| O-ring Seals, Ethylene Propylene (EPDM) | 036 | 5600-70 EPDM | 2.504 | 2.364 | 0.070 | Black | O-E036 |
| O-ring Seals, Ethylene Propylene (EPDM) | 037 | 5600-70 EPDM | 2.629 | 2.489 | 0.070 | Black | O-E037 |
| O-ring Seals, Ethylene Propylene (EPDM) | 038 | 5600-70 EPDM | 2.754 | 2.614 | 0.070 | Black | O-E038 |
| O-ring Seals, Ethylene Propylene (EPDM) | 039 | 5600-70 EPDM | 2.879 | 2.739 | 0.070 | Black | O-E039 |
| O-ring Seals, Ethylene Propylene (EPDM) | 040 | 5600-70 EPDM | 3.004 | 2.864 | 0.070 | Black | O-E040 |
| O-ring Seals, Ethylene Propylene (EPDM) | 041 | 5600-70 EPDM | 3.129 | 2.989 | 0.070 | Black | O-E041 |
| O-ring Seals, Ethylene Propylene (EPDM) | 042 | 5600-70 EPDM | 3.379 | 3.239 | 0.070 | Black | O-E042 |
| O-ring Seals, Ethylene Propylene (EPDM) | 043 | 5600-70 EPDM | 3.629 | 3.489 | 0.070 | Black | O-E043 |
| O-ring Seals, Ethylene Propylene (EPDM) | 044 | 5600-70 EPDM | 3.879 | 3.739 | 0.070 | Black | O-E044 |
| O-ring Seals, Ethylene Propylene (EPDM) | 045 | 5600-70 EPDM | 4.129 | 3.989 | 0.070 | Black | O-E045 |
| O-ring Seals, Ethylene Propylene (EPDM) | 046 | 5600-70 EPDM | 4.379 | 4.239 | 0.070 | Black | O-E046 |
| O-ring Seals, Ethylene Propylene (EPDM) | 047 | 5600-70 EPDM | 4.629 | 4.489 | 0.070 | Black | O-E047 |
| O-ring Seals, Ethylene Propylene (EPDM) | 048 | 5600-70 EPDM | 4.879 | 4.739 | 0.070 | Black | O-E048 |
| O-ring Seals, Ethylene Propylene (EPDM) | 049 | 5600-70 EPDM | 5.129 | 4.989 | 0.070 | Black | O-E049 |
| O-ring Seals, Ethylene Propylene (EPDM) | 050 | 5600-70 EPDM | 5.379 | 5.239 | 0.070 | Black | O-E050 |
Reviews
There are no reviews yet.