TTS rod seals

The TTS is a rod seal with a semi-compact profile. Because it is fuller than a normal U-seal, it reacts less to pressure changes and keeps sealing well when the pressure is low, without losing anything at high pressure.

It is made of a polyurethane with good wear and extrusion resistance, and fits without special tools, as long as the housing has rounded chamfers with no burrs.

• Material: SEALPUR 93 polyurethane (93 Shore A)
• Pressure: up to 400 bar
• Speed: up to 0.5 m/s
• Temperature: from -40 °C to +100 °C
• Rod surface finish: Ra ≤ 0.3 µm

The clearance on the unpressurised side must get smaller as the pressure goes up: 0.40 mm at 200 bar, 0.17 mm at 400 bar. In the Aston Seal datasheet this profile is called S.