CMP 25542-004-000 Flat Plug with Gasket, 1.5″, Black


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  • Ideal for pool winterization and plumbing isolation
  • Resistant to cracking, corrosion, and deformation
  • Black finish with UV resistance for outdoor use
  • Easy installation without specialized tools
  • Durable, chemical-resistant construction

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SKU: CMP25542004000 Category:

Description

CMP 25542-004-000 Flat Plug with Gasket, 1.5″, Black

The CMP 25542-004-000 Flat Plug with Gasket, 1.5″ is a precision-engineered component designed to deliver dependable sealing performance in a wide range of pool, spa, and fluid management applications. Manufactured by Custom Molded Products (CMP), a trusted name in aquatic system components, this flat plug exemplifies durability, reliability, and ease of installation. Whether used for winterizing a pool, isolating plumbing lines during maintenance, or securely sealing unused ports in circulation systems, this 1.5-inch flat plug provides a practical and long-lasting solution.

Constructed from high-quality, chemical-resistant materials, the CMP 25542-004-000 flat plug is built to withstand harsh pool and spa environments. Exposure to chlorinated water, bromine, salt systems, and fluctuating temperatures can degrade inferior components over time. However, this plug is designed to resist corrosion, cracking, and deformation, ensuring consistent performance throughout seasonal changes. Its black finish not only gives it a clean, professional appearance but also provides additional UV resistance, making it suitable for both indoor and outdoor installations.

A defining feature of this flat plug is its integrated gasket. The gasket plays a critical role in forming a watertight seal between the plug and the threaded or smooth wall fitting. By compressing evenly during installation, the gasket prevents leaks and eliminates the need for additional sealants or Teflon tape in many applications. This simplifies installation while ensuring reliable sealing under normal operating pressures. The gasket material is selected for flexibility and resilience, maintaining its shape even after repeated tightening and removal.

The 1.5-inch sizing is one of the most common plumbing dimensions used in pool and spa systems. This makes the CMP flat plug highly versatile and compatible with a wide variety of return lines, suction ports, and wall fittings. It is particularly useful during winterization, when pool owners and technicians must plug return jets and suction outlets to protect plumbing lines from freezing temperatures. By creating a secure seal, the plug helps prevent water intrusion, which can expand and cause costly pipe damage in colder climates.

In addition to seasonal use, the CMP 25542-004-000 flat plug is also ideal for maintenance and repair operations. Technicians frequently need to isolate sections of plumbing while performing equipment upgrades, pump replacements, or leak detection procedures. This flat plug allows for quick sealing of open ports, minimizing downtime and preventing unwanted water flow. Its simple design ensures that it can be installed or removed without specialized tools, making it convenient for both professionals and experienced DIY users.

Durability is a cornerstone of this product’s design. The rigid body construction maintains structural integrity under pressure, while the flat face ensures even contact with the gasket surface. Unlike expandable rubber plugs that may deteriorate or lose elasticity over time, this flat plug provides consistent mechanical sealing performance. The sturdy construction also reduces the risk of stripping or warping, especially when installed correctly according to manufacturer guidelines.

The black color of the plug serves both functional and aesthetic purposes. In visible installations, it blends seamlessly with darker pool finishes, fittings, or equipment pads. From a functional standpoint, darker pigments can enhance resistance to UV exposure, helping maintain material integrity in sun-exposed environments. This makes the plug particularly suitable for outdoor pools and spas where components are regularly subjected to direct sunlight.

Ease of use is another important benefit of the CMP 25542-004-000 flat plug. Its straightforward design ensures that even users with limited plumbing experience can achieve a proper seal. The gasket provides clear tactile feedback during tightening, indicating when sufficient compression has been achieved. This reduces the risk of overtightening, which can damage fittings or compromise the seal. The plug’s compact form factor also makes storage simple when not in use.

CMP is a leader in products for the recreational pool and spa industry. Innovative products from CMP include sanitizer systems, white goods, LED lighting, water features and accessories.CMP is committed to creating solutions for pool and spa industry professionals. Spa designers, pool builders, bath manufacturers and retail store owners around the world depend on CMP products, service and support.

CMP 25542-004-000 Flat Plug with Gasket, 1.5″, Black Features:

  • 1.5-inch flat plug designed for standard pool and spa fittings
  • Reusable design for seasonal or maintenance applications
  • Integrated gasket ensures secure, watertight seal
  • Ideal for pool winterization and plumbing isolation
  • Resistant to cracking, corrosion, and deformation
  • Black finish with UV resistance for outdoor use
  • Easy installation without specialized tools
  • Durable, chemical-resistant construction

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Additional information

Brand

CMP

Plumbing Accessories

Winter Covers & Plugs

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