As a specialized supplier, we compound and machine 10% Ekonol PTFE tube to solve sealing and bearing challenges where virgin PTFE cannot hold tolerances. Our 10% Ekonol PTFE tube for compressor seal grade is manufactured from 90% PTFE resin and 10% Ekonol aromatic polyester filler. The filler changes the crystalline structure of the matrix, giving you aromatic polyester PTFE tubing with higher compressive strength and better wear resistance. When seals run at high pressure or reciprocating speeds, Ekonol filled PTFE tube low creep keeps cross-section dimensions stable and prevents blow-by. For dry-running or abrasive environments, we supply high wear Ekonol PTFE tube with a fine ground bore and controlled ovality to match your piston, rod, or rotary shaft. Every tube is stress-relieved, ground, and inspected for ovality, surface finish, and filler dispersion. Our in-house lot control means you receive consistent creep resistance, a critical factor in compressor seals, valve seats, and pump wear rings.
Our 10% Ekonol PTFE tube stock is produced in a controlled sintering cycle to minimize internal stress and improve machinability. Each lot is tested for density, tensile properties, hardness, and dimensional stability before shipment. The following parameters apply to standard finished tubes.
| Parameter | Typical Value | Test Method |
|---|---|---|
| Filler content | 10% ±1% Ekonol | Ash test / TGA |
| Density | 2.05 g/cm³ | ASTM D792 |
| Tensile strength | 18–22 MPa | ASTM D4894 |
| Elongation at break | 180–220% | ASTM D4894 |
| Hardness | 60–65 Shore D | ASTM D2240 |
| Continuous service temperature | -100°C to +260°C | ASTM D3418 |
| Dynamic coefficient of friction | 0.08–0.15 | ASTM D1894 |
| Creep reduction vs. virgin PTFE | 40–50% lower | Internal creep test |
| Wear rate K factor | 3–6 x 10^-6 mm³/N·m | Thrust washer test |
This material machines readily with sharp carbide or diamond tooling. Standard tolerances are h7 for OD and H8 for ID, but tighter tolerances down to ±0.025 mm are available on request. Tubes are supplied with protective end caps and are wrapped in polyethylene film to prevent surface damage during transit. Custom lengths, diameters, and ground surfaces are available to match specific seal geometries.
