CPVC Flat washer

CPVC Flat washer Overview

CPVC Flat Washer is a specialized, non-metallic component primarily used for load distribution and spacing in corrosive environments demanding higher temperature resistance than standard PVC. CPVC (Chlorinated Polyvinyl Chloride) is chemically similar to PVC but features an enhanced ability to withstand elevated temperatures, making it a crucial alternative to common fasteners like stainless flat washer or flat washer nylon in industrial piping and chemical applications.

Product Parameters

CPVC Flat Washers typically adhere to international metric standards for plain washers, such as ISO 7089 (Non-chamfered) or ISO 7090 (Chamfered), with dimensions defined by the inner diameter (ID), outer diameter (OD), and thickness (T).

Key Features

The key features of CPVC are derived from the additional chlorine in its polymer structure, enhancing its thermal stability:

• Elevated Temperature Resistance: CPVC can safely operate at temperatures approximately 30°C higher than unchlorinated PVC, with maximum service temperatures typically around 93°C (200°C).

• Broad Chemical Resistance: CPVC maintains the excellent resistance of PVC to many acids, alkalis, and salts, making it suitable for aggressive chemical environments where even a stainless flat washer might suffer pitting corrosion.

• Excellent Dielectric Properties: It is a non-conductive material, making it ideal for electrical isolation, thermal breaks, and preventing galvanic corrosion between dissimilar metals.

• Good Mechanical Strength: CPVC offers stiffness and structural integrity adequate for non-critical, low-torque assemblies, maintaining its shape better than a flat rubber washer.

• Dimensional Compliance: Available in standard industry sizes, ensuring compatibility with existing fasteners and adherence to flat washer specs.

Applications

CPVC Flat Washers are essential in industrial fluid handling and processing where both heat and corrosion are present.

1. Industrial Fluid Handling: Used extensively in piping systems, pumps, and valves that transport hot corrosive liquids, such as hot water or concentrated chemicals.

2. Chemical Processing: Employed in tanks and reactors where fasteners need protection from chemical vapors and elevated temperatures simultaneously.

3. HVAC and Water Heating: Used in assemblies exposed to hot water systems where metal degradation is a concern.

4. Electrical Isolation: Used as an insulating spacer between fasteners and equipment casings in high-ambient-temperature electrical applications.

5. Corrosive Outdoor Environments: Used in outdoor fixtures, offering superior temperature stability compared to standard PVC in sunny climates.

Advantages

• Superior High-Temperature Service: CPVC can safely operate at temperatures up to 93 °C(200°C), which is significantly higher than standard PVC and many other common flat washer nylon or plastic alternatives.

• Excellent Chemical and Corrosion Resistance: It withstands a broad range of corrosive agents (acids, alkalis, and salts), making it highly superior to metal washers (like stainless flat washer) in aggressive chemical environments.

• Reliable Isolation: Provides effective electrical isolation (dielectric strength) and acts as a thermal break, preventing galvanic corrosion between dissimilar metal components.

• Cost-Effective Upgrade: It is more economical than high-end specialty polymers (like PEEK) while providing crucial performance upgrades over cheaper standard PVC.

Packaging & Delivery

Standard packaging includes PE bag, foam cover, and one double-deck corrugated outer carton for safety during transit. Delivery time is 5-15 working days depending on the quantity.