Hydraulic & Pneumatic
DK Seal
A compact pneumatic piston seal for cylinder applications requiring sealing, guidance, and stable reciprocating motion.
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- Compact piston profile
- Reciprocating air service
- Application-based materials
Product overview
Understand the Product Before Selecting a Specification
ouning supplies DK seals for compact pneumatic piston positions. The part is used where a cylinder piston needs sealing and guidance in reciprocating air service. Material, size, and housing details should be confirmed against pressure, stroke, speed, and the cylinder design.
Compact piston profile
The profile is intended for piston positions in pneumatic cylinders where sealing and guidance are required in a limited housing space.
Reciprocating air service
Stroke, speed, pressure, and lubrication condition should be reviewed together with the cylinder bore and groove.
Application-based materials
Material and hardness should be selected against the air quality, temperature, and expected service cycle.
Product scope
Applications, Materials, and Supply Options
Use these categories as a starting point. The final specification depends on the complete application.
Common Applications
- Pneumatic cylinders
- Compact piston positions
- Reciprocating air cylinders
- Industrial automation equipment
Material Options
- NBR
- FKM
- Application-specific compounds reviewed against the service conditions
Supply Capabilities
- Standard and custom sizes
- Material selection support
- Sample and batch production
- Dimensional inspection
Before requesting a quote
Selection Factors for DK Seal
More complete input leads to a clearer product and material discussion.
Cylinder and groove dimensions
Provide bore diameter, groove width and depth, and a drawing where available.
Motion and pressure
State stroke, speed, working pressure, and whether the cylinder is double-acting.
Working conditions
Describe air quality, lubrication, temperature, and expected cycle life.
Validation needs
Include sample quantity, inspection dimensions, and any cylinder-maker or in-house approval process.
Project workflow
A Practical Review Process
The steps remain clear whether you are identifying a standard part or developing a custom specification.
- 01
Define
Share the product, drawing, dimensions, service conditions, and quantities.
- 02
Confirm
Align the material, hardness, tolerances, tooling, samples, and documentation.
- 03
Validate
Review samples and complete the application-specific approval process.
- 04
Supply
Maintain confirmed specifications and identification for repeat requirements.
Questions & answers
DK Seal Questions
Common questions about selecting and requesting DK Seal.
Where is a DK seal used?
It is used on pneumatic cylinder pistons where a compact seal must provide sealing and guidance in reciprocating air service.
Can you match an existing cylinder groove?
Yes. Send the groove drawing or measured dimensions together with pressure, stroke, and quantity.
Which material is typical?
NBR and FKM are commonly reviewed for pneumatic piston seals. The final choice depends on temperature, media, and service cycle.