K-FLEX LS 3 Foot Self-Seal
Products
- K-Flex LS Tube
- K-Flex LS Self-Seal
- K-Flex LS 3 Foot Self-Seal
- K-Flex LS Tube White
- K-Flex LS Sheet S2S
- K-Flex LS w/ PSA
- K-Flex Product Home
Made in America
Designed for the professional contractor
Description
K-FLEX™ LS SELF-SEAL pipe insulation is an environmentally-friendly, CFC-free, flexible, elastomeric insulation. It is black in color and identified as K-FLEX™ LS 3-FOOT SELF-SEAL. This superior closed-cell insulation is designed to retard heat flow and prevent condensation when properly installed. K-FLEX™ LS SELF-SEAL pipe insulation is pre-slit with a factory-applied specially formulated, long-lasting bonding adhesive applied to both seam surfaces. This insulation comes with convenient built-in release liners which allow for easy installation. It is available in wall thicknesses of 1/2” and 1” and in sizes ranging from 3/8” - 2 5/8”. K-FLEX™ LS SELF-SEAL’s key physical properties are approved through supervision by Factory Mutual Research Corporation. It is non-porous, non-fiberous and resistant to mold growth. The Bio-Guard™ antimicrobial system provides added protection against mold, fungal and bacterial growth. The active ingredient in Bio-Guard™ is registered with the EPA.
Applications
K-FLEX™ LS SELF-SEAL has the same excellent insulation properties as standard K-FLEX™ LS and is used on similar applications such as refrigerant lines, cold water plumbing, roof drains and chilled water systems. It is ideal for straight runs, speeding up installation time. K-FLEX™ LS SELF-SEAL is recommended for applications ranging from -40°F to 200°F (-40°C to 93°C) for both new and existing applications. For best results, store and install K-FLEX™ LS SELF-SEAL at temperatures above 40°F (4°C).
K-FLEX™ LS SELF-SEAL’s closure system is designed to save labor costs, particularly on straight runs. It greatly reduces the use of contact adhesives, thus allowing for improved working conditions and compliance with OSHA requirements. K-FLEX™ LS SELF-SEAL can be used with heat tracing/heat tapes.
Installation
K-FLEX™ LS SELF-SEAL is pre-slit with factory-applied adhesive (PSA) on both seam surfaces. Convenient built-in tabs ease installation: slip the tube on the pipe, pull the tab to expose the adhesive, and pinch the sides together applying pressure to the seam. The seam should be positioned to be on the bottom of the pipe.
All butt joints must be sealed with an approved contact adhesive. Fittings are fabricated from miter-cut tubular sections or from K-FLEX™ LS SHEET.
Outdoor Applications
K-FLEX™ LS SELF-SEAL pipe insulation is made from a UV resistant elastomeric blend. For moderate UV exposure applications, no additional protection is needed. However, for severe UV exposure applications (rooftop applications) or where optimum performance is required, R-374 Protective Coating or appropriate jacketing or cladding should be used. For more detailed information refer to the Installation Guidelines.
Features and Benefits
K-FLEX LS SELF-SEAL in 3-foot lengths offers the advantage of easier handling and installation.
- Easy-to-handle stackable box
- Easier to seal in hard-to-reach areas
- Enhanced safety - avoids overreaching when working from scaffolding or ladders
These advantages are particularly evident when working at high elevations.
Resistance to Moisture Vapor Flow
The closed-cell structure and unique formulation of K-FLEX™ LS SELF-SEAL effectively retards the flow of moisture vapor, and is considered a low transmittance vapor retarder. For most indoor applications, K-FLEX™ LS SELF-SEAL needs no additional protection.
Additional vapor barrier protection may be necessary for K-FLEX™ LS SELF-SEAL when installed on low temperature surfaces that are exposed to continuous high humidity.
Flame and Smoke Rating
K-FLEX™ LS pipe insulation (in wall thicknesses of 1/2" (12 mm) and 1" (25 mm)) has a flame-spread rating of 25 or less and a smoke development rating of 50 or less as tested by ASTM E 84 Method of Testing entitled: “Surface Burning Characteristics of Building Materials.” K-FLEX™ LS SELF-SEAL is acceptable for use in duct/plenum applications meeting the requirements of NFPA 90A/B.
Numerical flammability ratings alone may not define the performance of products under actual fire conditions. They are provided only for use in the selection of products to meet limits specified, when compared to a known standard.
Specification Compliance
ASTM C 534 Type 1 (Tubing), Grade 1
ASTM D 1056-00-2C1
New York City MEA 186-86-M Vol. IV
USDA Requirements
UL 94-5V Flammability Classification (Recognition No. E300774)
ASTM E 84 1" 25/50-tested according to UL 723 and NFPA 255
Complies with requirements of CAN/ULC 2102-M88
FMRC 2006 Approval Guide Chapter 14 Pipe Insulation
Meets requirements of NFPA 90A Sect. 2.3.3 for Supplementary Materials for Air Distribution Systems
Meets requirements of ASTM C 411 (Test Method for Hot Surface Performance of High Temperature Thermal Insulation)
Meets requirements of UL 181 sections 11.0 and 16.0 (Mold Growth/Air Erosion)
| Physical Properties | |||
|---|---|---|---|
| Temperature Range Tubes | -40°F to +200°F | ASTM C 411 | |
| Color | Black | ||
| Thermal Conductivity | 75°F Mean Temp | 0.27 BTU-in/hr-ft²-°F | ASTM C 177 ASTM C 518 |
| Water Vapor Permeability | <0.06 perm-in | ASTM E 96 | |
| Water Absorption % | <0.20 by volume | ASTM C 209 | |
| Resistance to Oil & Greases | Good | ||
| Density | 3 pcf to 6 pcf | ASTM D 1622 ASTM D 3575 |
|
| Resistance to U.V. & Weather | Good¹ | ||
| Odor | Negligible | ||
| Ozone Resistance | Good | ||
| % Closed Cells | >90 | ||
| Dimensional Stability | <4.0 | @ 220°F | ASTM C 534 |
| Flame Spread (up to 1" wall) | Not greater than 25 | ASTM E 84 | |
| Smoke Developed (up to 1" wall) | Not greater than 50 | ASTM E 84 | |
| Flexibility | Excellent | ||
1. Outdoor applications should be protected with an approved K-Flex™ coating applied to the recommended thickness. Two or more coats may be required.