Place of Origin:
Guangdong,China
Brand Name:
ORK
Certification:
FDA,ROHS,ISO9001,TS16949
Model Number:
Customized
Our high-performance EPDM O-rings deliver reliable sealing for steam, hot water, and demanding industrial environments. Available in standard and custom sizes, these rubber O-rings serve as a dependable alternative to NBR, FKM, and silicone seals for both static and dynamic applications.
O-ring sealing is one of the most widely used sealing solutions for static and dynamic applications. An O-ring is an elastomer ring with a circular cross-section. When installed in a groove and compressed, it creates a tight seal that blocks the leakage of liquid or gas. We supply O-rings in multiple rubber materials — including EPDM, NBR, FKM, and silicone — to adapt to diverse media and working environments.
| Process Stage | Sheet | Button |
|---|---|---|
| Press Cure | 5 min at 170°C | 10 min at 170°C |
| Post Cure | 1 hr at 125°C | 1 hr at 125°C |
| Property | Specification | Test Result |
|---|---|---|
| Hardness, Shore A | 70° ±5 | 70 |
| Tensile Strength, MPa, min | 14 | 14.9 |
| Ultimate Elongation, %, min | 300 | 327 |
| Specific Gravity (g/cm³) | — | 1.15 |
| Test Parameter | Specification | Test Result |
|---|---|---|
| Heat Resistance (70 h at 100°C) — Change in Hardness, points | 10 | 2 |
| Change in Tensile Strength, % | -25 | -4.1 |
| Ultimate Elongation, max % | -25 | -3.4 |
| Compression Set, max, 22 h at 70°C | 25 | 8 |
| Test Parameter | Specification | Test Result |
|---|---|---|
| Resistance to Ozone — Exposure Method B | No Crack | Pass |
| Water Resistance: 100°C, 70 h (EA14) — Volume Change, % | ±5 | 3.7 |
| Low-Temperature Brittleness — After 3 min at -55°C (F19) | Nonbrittle | Pass |
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