Viega 21023 1/2 Inches Propress Cts Hnbr Sealing Element

Product Description

The Viega 21023 is a 1/2 inches ProPress HNBR sealing element designed for use with Viega ProPress CTS size fittings in professional plumbing applications. This sealing element is a critical component in the ProPress press-fitting system, providing a reliable and leak-free connection without the need for open flame, soldering, or additional adhesives. HNBR, or Hydrogenated Nitrile Butadiene Rubber, is a high-performance elastomer known for its excellent resistance to heat, pressure, and a wide range of fluids. This makes it well suited for potable water systems, hydronic heating lines, and general plumbing distribution in both residential and commercial construction. Plumbing professionals and pipefitters rely on ProPress sealing elements to maintain the integrity of press connections over the long term. The sealing element fits inside the ProPress fitting and is compressed during the pressing operation, forming a permanent, pressure-tight seal around copper tubing in CTS dimensions. Replacement sealing elements like the Viega 21023 are commonly needed when refurbishing existing fittings, inspecting older press connections, or completing repairs in tight spaces where a full fitting replacement is not practical. The 1/2 inches size is one of the most frequently used dimensions in residential and light commercial plumbing, covering supply lines, branch connections, and fixture feeds. Using the correct OEM sealing element ensures that press joints meet system pressure ratings and comply with applicable plumbing codes. Viega ProPress components are widely accepted across the plumbing trade for their speed of installation and consistent performance in copper piping systems.

• HNBR material provides strong resistance to heat, pressure, and common plumbing fluids
• Designed specifically for Viega ProPress CTS size fittings in 1/2 inches copper applications
• Supports flame-free installation for faster, safer press connections on the job

Product Highlights

The Viega 21023 sealing element delivers a dependable, code-compliant seal inside ProPress CTS fittings for 1/2 inches copper plumbing systems. Its HNBR construction ensures long-term performance in potable water and hydronic applications.

Product Information

Standard Information

• Brand: VIEGA
• Manufacturer Part Number: 21023

Technical Specifications

• Product Type: Sealing Element
• Size: 1/2 inches
• Material: HNBR (Hydrogenated Nitrile Butadiene Rubber)
• Application: Plumbing
• Compatible System: Viega ProPress CTS