3/8" x 3/4" x 6' Rubber Pipe Insulation Cover

K-Flex 6RX038068 – 3/8" Wall, 3/4" ID Elastomeric Pipe Insulation, 6' Length

The K-Flex 6RX038068 is a flexible closed-cell elastomeric insulation product designed for use on mechanical piping systems requiring moisture resistance and thermal efficiency. With an inner diameter of 3/4", wall thickness of 3/8", and a standard 6-foot length, this insulation is suited for HVAC, refrigeration, and plumbing applications where condensation control and energy conservation are priorities.

Formulated with a durable rubber-based composition, this insulation provides a reliable barrier against thermal loss and vapor transmission. The material complies with ASTM E84 25/50 requirements for flame and smoke development and is manufactured to deliver consistent performance in both residential and commercial settings.

Key Features

• Closed-Cell Elastomeric Foam – Minimizes thermal transfer and helps control condensation on piping systems.
• ASTM E84 25/50 Rated – Meets building code requirements for fire safety in mechanical insulation applications.
• Moisture Vapor Resistance – Retards vapor flow, reducing the risk of water damage and microbial growth.
• Flexible Application – Designed to install easily on standard copper, steel, or PVC pipes with minimal effort.
• Made in the USA – Manufactured to consistent domestic quality standards for performance and reliability.

Technical Specifications

• Wall Thickness: 3/8 inch
• Inner Diameter: 3/4 inch
• Length: 6 feet
• Material: Flexible elastomeric rubber
• Flame/Smoke Rating: 25/50 (ASTM E84)

Installation Guidelines

Before applying, ensure the pipe surface is dry and free from oil or dust. Cut to length with a utility knife as needed. Depending on the site conditions, a contact adhesive or tape can be used to seal seams and ensure a continuous vapor barrier. While this product is user-friendly, all field installations should comply with applicable mechanical codes and insulation standards.

Application Notes for Contractors

This insulation is engineered to handle daily use on active mechanical systems and is suitable for both new installations and retrofits. Its resistance to moisture intrusion and thermal loss makes it a preferred choice in chilled water and refrigeration lines where condensation control is critical. Contractors will find it dependable, code-compliant, and efficient to install on-site.