Round Pipe End Cap – Galvanized Steel | HVAC Duct Seal Cap

Seal your system with precision to improve performance and prevent energy loss.

Upgrade your residential HVAC duct system with the Round Pipe End Cap – Galvanized Steel, designed to provide a secure and airtight seal at the end of spiral or round duct runs. Whether you're capping unused ductwork or completing a custom installation, this high-quality end cap helps prevent air leakage, improving your system’s efficiency and reliability.

Key Features

• Durable Galvanized Steel Construction
  Made from corrosion-resistant galvanized steel, built to last in demanding HVAC environments.
• 2-Inch Throat Length
  Provides a snug, secure fit inside the duct to create an airtight seal and support consistent airflow.
• SMACNA-Compliant Design
  Manufactured to meet SMACNA (Sheet Metal and Air Conditioning Contractors' National Association) guidelines for code-compliant installation.
• Quick, Tool-Free Installation
  Slides into round duct ends for seamless integration with existing HVAC systems—no special tools required.
• Energy Efficient
  Prevents air loss at terminal points, helping your HVAC system operate more efficiently and reducing energy costs.

Product Specifications

• Material: Galvanized Steel (Available in Aluminum and Stainless Steel)
• Shape: Round
• Type: Pipe End Cap
• Throat Length: 2 Inches
• Application: Residential HVAC Systems
• Gauge: 26 (Heavier gauges available)
• Made in the USA

Perfect For:

• Sealing open ends in custom ductwork
• HVAC system retrofits and upgrades
• Capping unused round duct branches
• Energy-conscious residential installations

Why Choose Duct2Go?

• Manufactured to precision with professional-grade materials
• Supports SMACNA-compliant residential HVAC builds
• Available in multiple gauges and materials
• Shipping across the U.S.
• Trusted by HVAC contractors and DIY homeowners

Seal smarter, not harder.
The Round Pipe End Cap – Galvanized Steel ensures clean airflow, improved energy efficiency, and a professional finish for any HVAC ductwork project.