5" Flexsul-Seal w/ 2- 1" non-barrier pex & 2 - 3/4" non-barrier pex

Product Description

The characteristics that make rigid Insul-Seal a superior insulator for hot water lines has finally been translated into a flexible version retaining the positive benefits of the original product.

Flexsul-Seal is an elastomeric thermal insulation used to retard heat loss in hot water plumbing and dual hot waterline systems. The Flexsul-Seal system is designed to trap dead air, within an expanded closed cell structure, thus increasing its total R-Value and reducing Heat loss in cold underground burial. Thermal performance is achieved by sealing the 2-5/8" centered air space, in effect reducing the flow of air and increasing the total R-Value of 6 by and additional factor of 5-9.


Pex tubing carrying hot water needs room to expand and contract. Without needed space to expand, Pex tubing call cull and add unneeded stress at its connections. With the Flexsul-Seal system Pex waterlines have sufficient room to expand and contract with no stress added to connections ends.


For your Outdoor furnace Installation it only make sense to use a quality product. Outdoor wood Boilers can only operate at peak performance when used with a quality insulated piping system. A poor quality insulated system will require substantially more wood and also reduce the amount of heat delivered to heat your home. Flexsul-Seal carries along the tradition of high quality and high standards already established by its manufacturer, Insul-Seal Insulated PVC.


Flexsul-Seal Advantages

• Lightweight - Easy Handling

• High Flexibility

• 5" I.D. - Increased Insulation Protection

• 50% more insulation area then 4"

• Thermal Dead Air Pocket resulting in increased R-Value

• Decrease Labor Costs

• Joint-Free Installation

• Lighter Weight = Lower Transportation Costs

• Each Coil includes:

• 1 - 5" Coupling

• 1 - Roll Tape

• 4 - Insulated end caps

Typical Applications

Outdoor furnaces and boilers

Thermal Insulation Properties

• Operating Range: -297 degree F to 220 degree F

• >90 % Closed Cell

• .02% Water Absorption by volume

• .10% Water Vapor Permeability

• Passes flame Spread of 25 as tested by ASTM E 84

• Meets requirements of ASTM C 411 for hot surface performance of High Temperature Thermal Insulation

• R-Value = 6 per Inch

• Non-Porous, Non Fibrous Insulation resists mold growth

• 3lb/ft - 6lb/ft Density

lexul-Seal Specs

• Exterior skin consists of 50 mil Polyethylene Corrugated Tubing

• Exterior skin complies with ASTM F405-97 for H.D. Tubing

• All Pex Tubing Meets Applicable Standards

Brochure