Pneumatic Piston Seals

Pneumatic piston seals are dynamic profiles that separate the working chambers on an air cylinder piston. Their opposed or directional lips contain compressed air with limited drag, allowing smooth, responsive reciprocation while maintaining useful chamber isolation through repeated automation cycles.

Key facts

Family: Pneumatic Seals
Common types: Double-acting profile, Single-acting U-ring, Rubber-bonded piston, Compact symmetrical seal
Materials: Polyurethane, NBR, FKM (fluoroelastomer), Steel carrier
Used in: ISO 15552 cylinders, Compact actuators, Robotic grippers, Food packaging lines, Pneumatic presses

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Types

Double-acting profile
Single-acting U-ring
Rubber-bonded piston
Compact symmetrical seal

Materials

Applications

ISO 15552 cylinders
Compact actuators
Robotic grippers
Food packaging lines
Pneumatic presses

What to send for a quote

cylinder bore
piston groove diameter
groove width
single or double action
air condition

Questions about pneumatic piston seals

What should I send to identify pneumatic piston seals?

Send cylinder bore, piston groove diameter, groove width, single or double action, air condition. Confirm whether the seal is a loose ring or bonded to a complete metal piston carrier. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select pneumatic piston seals?

Choose the section for acting direction, bore finish, friction target, speed, cushioning arrangement and lubrication state. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08