Strain Relief System Selection Chart
Cord or Conduit T ype Fitting or Page
Grip Type Application Features Range Inches (cm) Attachment Number
Deluxe Cord Outdoors or indoors where Aluminum fittings, .187”-3.250” PG, N.P.T. aluminum, T-60, T-61,
Aluminum subjected to moisture or stainless steel mesh, (.47-8.25) male straight, T-64
Fitting/ splash. Examples are crane neoprene oil-and- 45° male, 90° male,
Stainless and hoist pendant drop watertight bushing. female straight.
SteelGrip stations, hand tools, pumps Double-single weave. Thread sizes 3/8”-3”.
and processing equipment.
Deluxe Cord Outdoors or indoors where Nylon fitting, stainless .187”-1.125” N.P.T. nylon, T-62
Nylon Fitting/ subjected to moisture or steel mesh, double-single (.47-2.86) male straight,
Stainless splash. Examples are weave, neoprene oil-and- 90° male. Thread
SteelGrip marine and food watertight bushing. sizes 1/2”-1”.
processing equipment.
Deluxe Cord Indoor or outdoors. Non-metallic grip is .187”-1.000” N.P.T. nylon, T-63
Nylon Fitting/ Provides liquidtight seal, corrosion resistant, (.47-2.54) straight male, thread sizes 3/8”-1”
Non-metallic where exposed to moisture. nonconductive and 90° male, thread sizes 1/2”-1”.
Grip Excellent for oil refining provides superior grip-
and chemical processing. ping and flexing benefits.
Neoprene liquidtight
bushing. Nylon fitting.
Deluxe Cord Indoor or outdoor use where Stainless steel fitting .187”-1.000” Straight male T-63
Stainless exposed to moisture. Very and grip for strength. (.47-2.54) Only with N.P.T.
SteelFitting strong for heavy abuse areasNeoprene liquidtight Thread sizes 1/2”-1”.
And Grip such as drilling platforms, bushing. Double/single
steel mills and mines. weave grip.
Wide Range Indoor use only for wiring Neoprene gasket–seals .240”-2.450” Straight male N.P.S. T-67
Strain Relief of electrical enclosures, out cips, dirt, dust. (.61-6.22) or N.P.T.
machine tools, portable One piece design with
power tools, bus drop galvanized steel mesh.
cable systems. Insulating bushing available.
Zinc-plated steel locknut.
Non-metallic Wiring or machine tools, Stainless steel mesh, .375”-2.008” N.P.T. steel, T-100
Flexible electrical enclosures, liquidtight fittings with trade size male Hubbell fittings,
Conduit Grip motors and systems “O” ring and locknut. straight male, 90°
(UL Type A) where conduit is subject Thread sizes 1/2”-2”.
to vibration and strain.
Liquidtight, Wiring of machine tools, Stainless steel mesh, .375”-4.000” N.P.T. 1/2”-4”, T-101
Flexible, electrical enclosures, motors liquidtight fittings. trade sizes Hubbell fittings,
Metal and systems where metallic Sealing “O” rings Male straight,
Conduit Grip liquidtight flexible conduit (optional). Choice of 45° male, 90° male,
is subjected to vibration, fittings. female straight.
flexure, motion or strain.
Technical Data Wire Management Products
Kellems®Grips for Strain Relief
Technical Section
T-68 Dimensions in Inches (mm)
www.hubbell-wiring.com
Kellems Strain Relief Grips are designed to prevent
tension from being transmitted to joints and
terminals on electrical cord, cable and conduit. In
most applications, a Kellems grip for strain relief is
stronger than the cable itself and gives much
greater security than the use of a fitting alone.
Kellems Grips for strain relief help make electrical
systems safer, and save money by minimizing
downtime from costly electrical failure due to cable
pull-out. Kellems Grips also aid in compliance with
the National Electric Code’s terminal tension
protection requirements.
Select the Correct Grip for Strain Relief
Kellems Grips for strain relief are designed to fit on
electrical cord, cable or flexible conduit.
Step 1 Refer to the chart below to determine the grip style
best suited for your application.
Step 2 Determine your cable outside diameter or conduit size.
Step 3 Locate environment—indoors or outdoors.
Step 4 Decide if a liquidtight seal is required.
Step 5 Select N.P.T. size and fitting style.