Submittal Sheet

Made in USA
Contains a Protective
Antimicrobial
Agent
DESCRIPTION
K-FLEX
®
INSUL-LOCK
®
DS (DoubleSeal) is an
NBR/PVC-based closed cell, flexible elastomeric
foam insulation. It is pre-slit with a factory-
applied pressure sensitive modified-acrylic
adhesive with scrim reinforcement on the seam
surface and a flexible PVC overlap tape with
acrylic adhesive for doubled seam security.
It is environmentally-friendly as it is free of
CFCs, HFCs, HCFCs, PBDEs, formaldehyde and
fibers. An EPA-registered antimicrobial agent
is incorporated into the product providing
additional protection against mold, fungal and
bacterial growth. It is UL GREENGUARD
®
Gold
Certified for low VOC emissions. The product’s
key physical properties are approved by Factory
Mutual. The product is made in K-FLEX USA’s
ISO 9001:2008-certified manufacturing facility
in North Carolina.
AVAILABILITY
K-FLEX
®
INSUL-LOCK
®
DS is black in color
and is available in 6’ length tube form in wall
thicknesses of 1/2”* up to 2” in diameter
sizes ranging from 3/8” I.D. to 4” IPS. (ID
range is subject to variation depending on wall
thickness).
*3/8” thick product is available and consists of only hot
melt adhesive on both seams for sealing purposes.
APPLICATIONS
K-FLEX
®
INSUL-LOCK
®
DS is recommended for
applications with service temperatures ranging
from -40°F (-40°C) to +220°F (+104°C). The
product is used to retard heat gain and prevent
condensation or frost formation on below-
ambient applications, including refrigerant,
cold water plumbing, chilled water, and
industrial process lines, among others. It can
be used with heat tracing tapes. It also retards
heat loss from medium hot systems, including
hot water plumbing, liquid heating, dual
temperature, and solar thermal piping, among
others.
OUTDOOR APPLICATIONS
K-FLEX
®
INSUL-LOCK
®
DS is made from
a UV-resistant elastomeric blend. For
low-to-moderate UV exposure (residential
applications), no additional protection is
needed. For severe UV exposure (rooftop
applications) or for optimum performance,
K-FLEX
®
374 Protective Coating, approved
jacketing or K-FLEX Clad
®
is recommended.
UNDERGROUND APPLICATIONS
K-FLEX
®
INSUL-LOCK
®
DS is acceptable for
use in buried applications with maximum
service temperatures of 160°F (71°C) using
the same installation principles as above
ground applications. For lines above the
water table, use a clean fill such as sand
(3”-5” layer) to protect the insulation before
backfilling. For optimum performance, the
lines should be encased in a conduit to protect
them from problems associated with ground
water intrusion and compaction. If a conduit
is not used, the insulation thickness should be
increased by one thickness size to compensate
for compaction.
INSTALLATION
K-FLEX
®
INSUL-LOCK
®
DS is flexible (even at
low temperatures), durable (non-fracturing
and skin is resistant to tearing from handling
and environment), safe to handle (non-
dusting and non-abrasive), and lightweight
for an efficient installation. K-FLEX
®
INSUL-
LOCK
®
DS is designed to save on labor costs,
particularly on straight runs, and reduce the
use of contact adhesives, allowing for improved
working conditions and compliance with OSHA
requirements.
K-FLEX recommends that insulation is installed
on non-operational systems with clean, dry
surfaces in ambient conditions between 40°F
and 100°F. For cold weather installations, it
is critical that sufficient pressure levels be
applied for proper seam sealing. For properly
sized insulation tubing, slip the tube on the
pipe, pull the built-in release liner, pinch the
tube shut, apply pressure at the seams, and
apply the overlap seam using pressure. All
butt joints, termination points and open ends
should be sealed with an approved contact
adhesive, making sure both surfaces to be
joined are coated. Longitudinal seams should
face downward and vapor stops should be
installed as needed. Fittings (elbows, tees,
p-traps) and special parts (flanges, valves,
etc.) can be field-fabricated from insulation
tubes and sheets or K-Fit
®
factory-fabricated
fittings can be used. ASTM C1710, Installation
Guide for Flexible Closed Cell Foams, and the
K-FLEX Installation Manual should be used as
comprehensive installation guides.
RESISTANCE TO MOISTURE
VAPOR FLOW
The expanded closed cell structure and unique
formulation inherently resists moisture
vapor intrusion and is considered a Class 1
vapor retarder per ASHRAE. For most indoor
applications, K-FLEX
®
INSUL-LOCK
®
DS needs
no additional protection. Additional vapor
barrier protection may be necessary when
installed on cold surfaces that are exposed to
continuous high humidity.
FLAME AND SMOKE RATING
K-FLEX
®
INSUL-LOCK
®
DS in wall thicknesses
of 2” (50 mm) and below has a flame spread
rating of 25 or less and a smoke development
rating of 50 or less as tested to ASTM E84,
“Surface Burning Characteristics of Building
Materials”. It is acceptable for 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 C534 Type 1, Grade 1
• ASTM D1056-00-2B1
• New York City MEA 186-86-M Vol. V
• USDA Compliant
• CFIA Compliant
• RoHS Compliant
• UL 94-5V Flammability Classification (#E300774)
• ASTM E84 25/50-rated (to 2”) - tested to UL 723, NFPA 255
and CAN/ULC S102-03
• FMRC Approval Guide: Chapter 14 Pipe Insulation
• NFPA No. 101 Class A Rating
• NFPA 90A, 90B
• Meets requirements of California ECB Title 24
• UL GREENGUARD
®
Gold Certified
• Meets energy code requirements of ASHRAE 90.1 and 189.1
K-FLEX
®
INSUL-LOCK
®
DS
Closed Cell Flexible Elastomeric Foam Insulation
Factory-Applied DoubleSeal Closure System