Ratio-Pak Piston (Non-Vented) / MDPE / 300ml - 7660653

Product Name

Ratio-Pak Piston (Non-Vented) / MDPE / 300ml - 7660653

Brief Description

This product is a non-vented piston made from Medium-Density Polyethylene (MDPE), specifically designed for use with 300ml Nordson Ratio-Pak dual cartridge systems. It serves as a crucial component for packaging and dispensing various two-part (2K) industrial materials, ensuring a consistent seal within the cartridge during the dispensing process.

Popular Applications & Uses

- Dispensing two-part adhesives- Applying sealants- Packaging and dispensing foams- Handling coatings- Potting compounds for electronic components and other applications

Industries that Commonly Use It

- General Manufacturing- Chemical Industry- Construction/ Building Services- Automotive Service/Repair- Aerospace/Defense- Medical Device/ Prosthetics- Packaging Services or Contractor- Plastic Fabrication- Industrial Supply- Metal Fabrication- Furniture- Flooring Installer or Manufacturer- Cabinet & Woodworking- LED/Electronics- Marine- Energy

Special and Unique Features

- Designed for Nordson Ratio-Pak dual cartridge systems, known for their versatile snap-together design allowing various mix ratios (1:1 up to 25:1).- Constructed from MDPE, offering a balance of flexibility and chemical resistance.- Non-vented design ensures consistent seal integrity for specific material requirements.- Compatible with industry-standard dispense guns and static mixers when used as part of the Ratio-Pak system.- Facilitates easy filling and handling, with options for filling through the nozzle or back-side of the cartridge.

Key Properties

- Material: Medium-Density Polyethylene (MDPE)- Cartridge Compatibility: 300ml volume- Type: Non-Vented Piston- Function: Provides consistent seal integrity within the cartridge- Chemical Resistance: Good, typical of MDPE materials- Durability: Offers good impact strength and flexibility

Surface Compatibility

This piston is designed to be compatible with the internal surfaces of Nordson Ratio-Pak cartridges, which are typically made from polypropylene (PP) or nylon, depending on the specific material being dispensed. Its MDPE construction ensures broad chemical compatibility with a wide range of two-part adhesives, sealants, and other compounds.

Known backups / known substitutes

- **Self-Vented Pistons:** Nordson EFD offers self-vented pistons (e.g., AF Pistons, Multi-Seal with Integral Center Bleed Plug Pistons) that automatically release trapped air during insertion, simplifying the filling process for certain materials.- **Solid Multi-Seal Pistons:** These pistons may require a shim for air bleeding during insertion.- **Pistons from other manufacturers:** Various manufacturers produce pistons for two-component cartridges, often in materials like HDPE.

Comparison Note

The non-vented design of this piston differentiates it from self-vented or AF (Air Free) pistons. While self-vented pistons are designed to automatically eliminate trapped air during insertion, a non-vented piston typically requires air to be bled through alternative methods, such as through the nozzle during the filling process, or by using a separate vent strip. This characteristic makes non-vented pistons suitable for applications where precise control over air evacuation is managed externally or for materials that do not necessitate internal air bleeding during piston insertion.