VERTEX FC 39 is a high-performance F type Terpolymer FKM sealing solution specifically engineered for outstanding high-temperature and oil resistance.
This advanced 80 Shore A FKM compound is designed to excel in demanding thermal conditions up to +230°C and aggressive oil environments, making it a reliable choice for industries such as automotive, valves, pumps and compressors, where superior heat stability and oil compatibility are critical.
As part of ISMAT’s Vertex FC range of high-performance elastomers, VERTEX FC 39 is ideal for applications requiring FKM seals, O-rings and oil-resistant components. Its unique formulation ensures excellent performance with lower volumetric swell, improved chemical resistance, very good chemical compatibility and enhanced compression set resistance across operating temperatures from -5°C to +230°C.
| S.NO | Description | ASTM Test Method | Unit | Spec |
|---|---|---|---|---|
| 1 | Hardness | D 2240 | Shore A | 80±5 |
| 2 | Tensile Strength | D 412 | MPa | 12 (Min) |
| 3 | Elongation @ break | D 412 | % | 175 (Min) |
| 4 | Compression Set 22hrs@200°C | D 395 Method B | % | 25 (Max) |
| Compression Set 70hrs@200°C | D 395 Method B | % | 35 (Max) | |
| 5 | Operating Temperatures | °C | -5°C to +230°C |
At ISMAT, we develop VERTEX FC 39 using high quality materials from reliable global suppliers. We then test it thoroughly in-house to ensure exceptional performance and reliability in demanding high-temperature and oil resistance applications.
Our goal is to provide strong sealing solutions for industries with tough conditions. VERTEX FC 39 offers excellent resistance to aggressive oils and a broad range of chemicals with lower volumetric swell, improved chemical resistance, very good chemical compatibility and enhanced compression set resistance. This helps extend equipment life and improve efficiency.
VERTEX FC 39 performs reliably in key components such as valves, pumps, mechanical seals, compressors and reactors. It excels in automotive, valves, pumps and compressors, with superior heat stability up to +230°C and operating temperatures from -5°C to +230°C. Available as O-rings, backup seals, U cup seals, X rings, lip seals and wiper seals – all custom-engineered for critical uses.
Global customers trust VERTEX FC 39 FKM terpolymers for proven high-temperature and oil resistance. Need tailored solutions for your thermal or oil compatibility needs? Contact ISMAT today.
Hardness (Shore A): 80±5
Temp Range: -5°C to +230°C
Lower volumetric swell

Very good chemical compatibility
Improved Chemical resistance

Improved compression set resistance
Choose VERTEX FC 39 80 Shore A compound with lower volumetric swell, improved chemical resistance and compression set performance – effective from -5°C to +230°C. Get your custom quote, samples or technical advice now.