Prayag Rubber Product

�� Compact DAS Seal – Overview

A Compact DAS Seal (also called DAS Compact Seal or DAS Piston Seal) is a double-acting piston seal designed for use in hydraulic cylinders. It’s a compact, integrated seal that combines multiple sealing and guiding elements in one unit. DAS seals are commonly used in heavy-duty, high-pressure hydraulic systems.

�� Description

• Structure:

  • Center sealing element: Usually made of NBR (Nitrile Rubber) or PU (Polyurethane)

  • Two back-up rings: Typically made from thermoplastic materials (e.g., POM) to prevent extrusion

  • Two guide rings: Located on the outer sides, made from filled thermoplastics or fabric-reinforced materials to guide the piston and absorb side loads

• Seal Type: Double-acting piston seal with integrated back-up and guide rings

• Installation: Fits in closed grooves, making it a space-saving solution

�� Technical Specifications ✅ Advantages

• Compact design – ideal for cylinders with limited installation space

• All-in-one sealing system – includes sealing, back-up, and guiding

• Prevents extrusion and side-load damage

• Smooth motion and long service life

• Handles high pressure and variable loads

��️ Applications

• Hydraulic cylinders in mobile and industrial machinery

• Construction equipment

• Agricultural machinery

• Steel mill hydraulics

• Injection molding machines

�� Compact DAS Seal vs. Conventional Piston Seal Set

Would you like a technical drawing, part number examples, or a list of standard groove dimensions for Compact DAS Seals?

The DAS Piston Seal is a high-performance, double-acting seal designed for use in hydraulic cylinders operating under high pressure. Its compact design integrates multiple sealing elements to deliver outstanding leak prevention, superior wear resistance, and long-lasting durability in dynamic applications.

Key Features:

• Double-Acting Seal: Provides efficient sealing in both directions of piston movement, making it ideal for double-acting hydraulic cylinders.

• Integrated Design: Combines a sealing element (typically NBR or PU) with two thermoplastic backup rings and two guide rings for optimum stability and performance.

• Excellent Pressure Resistance: Suitable for applications up to 400 bar (depending on profile and material).

• High Wear & Extrusion Resistance: Designed to perform in harsh working environments with excellent resistance to extrusion and abrasion.

• Wide Temperature Range: Operates effectively in a broad temperature range (typically -30°C to +100°C).

• Low Friction & Smooth Operation: Minimizes friction for efficient energy use and reduced heat generation.

Material Composition:

• Sealing Ring: NBR (Nitrile Rubber) or PU (Polyurethane)

• Backup Rings: Thermoplastic (POM or similar)

• Guide Rings: Thermoplastic (POM or PA)

Applications:

• Mobile Hydraulics

• Construction Equipment

• Agricultural Machinery

• General Industrial Hydraulic Cylinders

• Presses and Injection Molding Machines

Advantages:

• Compact groove dimensions reduce installation space

• Easy installation and replacement

• Long service life and minimal maintenance

• Excellent performance in reciprocating motion