Nextflex Tubular Heaters

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11/8/11
Nextflex Tubular heaters
www.nexthermal.com
Next Generation
Flexible Tubular Heaters

11/8/11
Introducing the Nextflex
• Flexible tubular heater
• External sheath made of nickel braid
• External sheath fits into surface groove without
any air gaps
• Bendable into nearly all shapes
• Bending tool as bending aid available
• Wide range of stock heaters (diameter, length
and wattage)

11/8/11
Types of Nextflex
• Nextflex
− standard stocked item in 8.0mm and 8.5mm
• Nextflex – hermetic -- Special order
− sealed against gases and liquids
• Nextflex -- hermetic vario -- Special order
− sealed, one sided connection

11/8/11
8.0mm available in Round and D-shape
Nextflex

11/8/11
8.0mm Nextflex
• Available lengths ex stock :
− 300 mm – 2100 mm in increments of 50 mm
• Available wattage ex stock:
− 450 W to 3600 W (@230 V) depending on diameter and
length
• Available upon request:
− Other lengths
− Other wattages
− Other connection types
Nextflex

11/8/11
8.5mm Nextflex
• Available lengths ex stock:
− 300 mm – 1500 mm in increments of 50 mm
• Available wattage ex stock:
− 450 W to 3300 W (@230 V) depending on diameter and
length
• Available upon request:
− Other lengths
− Other wattages
− Other connection types
Nextflex

11/8/11
Available diameter ex stock /connection
type / bending radius from the middle:
• □ (6 x 6) mm / M3 / 12 mm
• ○ 6.5 mm / M3 / 12 mm
• ○ 8.0 mm / M4 / 14 mm Stocked round and D
shaped
• ○ 8.5 mm / M4 / 14 mm Stocked in round shape
• □ (8 x 8) mm / M4 / 14 mm
• Available on request: □ (4 x 4) mm
Nextflex

11/8/11
Nextflex Hermetic
• Hermetically sealed
• No intrusion of gases, liquids or humidity
• Temperature resistant up to 450°C
• Special order item—6 week lead time
Nextflex Hermetic

11/8/11
Available diameter / bending radius
from the middle, connection type:
• □ (6 x 6) mm / 12 mm
• ○ 6.5 mm / 12 mm
• ○ 8.0 mm / 14 mm
• ○ 8.5 mm / 14 mm
• □ (8 x 8) mm / 14 mm
• All types M4 thread
• Available upon request: various length / wattage
Nextflex Hermetic

11/8/11
Nextflex-Hermetic Vario
• One-sided connection head
• Hermetically sealed
• No intrusion of gases, liquids or humidity
• Optional integrated thermocouple
• Special order item 6 week delivery

11/8/11
Available Selections:
• □ (4 x 4) mm
• □ (6 x 6) mm
• ○ 6.5 mm
• ○ 8.5 mm
• □ (8 x 8) mm
• Available upon request: various length / wattage

11/8/11
Nextflex Shapes
square shape
contact surface 75%
round shape
contact surface 50%
- greater circumference than round
shape
- improved heat transfer
NEW!
square + round shape
contact surface 72%

11/8/11
Nextflex D-Shape
•
The new heater for 8.0mm grooves
•
Optimal heat transfer (above 72% and beyond)

11/8/11
Nextflex Round vs. D-shape
Note: Forming and staking tools required to properly install D Shape heater
Traditional Round Shape
Contact surface 50%
Advantage:
Ease of installation
Innovative D-shape
contact surface 72%
Advantage:
Improved heat transfer/energy efficiency
Staking reduces need for holding mechanism

11/8/11
Nextflex compelling advantage
Excellent Heat Transfer
Nexflex D-shape heaters proven to be faster and more
efficient than our previous generation flexible heater in
side by side test. Ask your Nexthermal representative to
show you the video.
User formable — Shipped in simple to install straight lengths
Availability — Nextflex heaters ship same day from stock for
orders placed before 2:00 p.m. Eastern Standard Time
Eliminate guesswork — Nextflex true to size heaters do not
expand when installed, eliminating risk of heated section
outside of the manifold
Supporting tools — Reduce installation time and improve
performance with Nexthermal installation tools
Technical support — Nexthermal can assist you in selection,
installation advice and improving application performance
Nexthermal Tubular Heaters…
the next generation flexible tubular heater.
Heat Test: Previous generation flexible tubular heater (left) vs. the Nextflex (right).
With Nextflex you are the clear winner.
Side by side test data demonstrates that Nextflex heaters transfer more heat to
your tool. The chart shows that the Nextflex heater is very close to the tool
temperature when our previous flexible heater shows a differential of more then
100Cº.
Nextflex round Nextflex D-shape
Nextflex D-shape in
square groove

11/8/11
Nextflex tools
Forming tool recommended for round Nextflex
Forming and staking tool required for Nextflex D Shape
Nextflex Forming tool
•
Designed for Nextflex
•
Helpful bending aid
•
No damage of Nextflex
Nextflex Staking tool
•
Designed for Nextflex
•
Helpful assembly aid
•
Optimized compressing

11/8/11
Nextflex heaters are simple and efficient
Efficient to Install Best Practices
Nextflex tools reduce installation time and eliminate
the need for additional retention methods.
Making sure heater is
directly above the groove,
strike with Teflon® side of
Nextflex forming tool.
One hard strike is better
than two soft ones.
Strike the Nextflex staking
tool hard every 20mm
(~.75"). This creates a
Firmly seated heater with
excellent heat transfer.
Form the first bend at
center location prior to
striking.
When bending, make
sure the Nextflex tool
handle is parallel with
the uninstalled Nextflex.
This puts the minimum
bending radius
protection in the correct
position.
The first 10mm (~.40")
after the connection
area should always be
straight.
For bending the Nextflex
we recommend our
Nextflex toolset. This will
allow the Nextflex to be
seated optimally into the
groove, resulting in
maximum heat transfer.
For optimal heat transfer,
it is best to stake the
Nextflex after assembly
approximately every
20mm (~.75") into the
groove.
Pneumatic hammer
attachment.

11/8/11
Customer Benefits
Benefits of External Sheath made of Nickel Braid
• 3x better heat transfer than stainless steel
• Flexible nickel braid adapts to the form of the
groove
• Minimum air gap of nickel braid compared to
stainless steel versions

11/8/11
Customer Benefits
• No stretching during installation process
• Hermetically sealed connection head
temperature resistant up to 450°C (Nextflex
Hermetic)
• Hermetically sealed connection head
temperature resistant up to 260°C (Nextflex
Hermetic Vario)
• Dimension (4x4) mm available
• One sided connection heads available

11/8/11
Customer Benefits
• Also available with integrated Thermocouple
− 4x4 and Hermetic Vario
• M3 and M4 thread available instead of M2.5
• Not bendable area 30/30 mm instead of 35/35
mm

11/8/11
Nextflex heaters are stocked in 8mm
and 8.5mm diameters
Length
Heated
Length
6.5mm Diameter 8.0mm Diameter 8.5mm Low Watt 8.5mm Standard
Round D-Shape Round D-Shape
min. bending radius 9mm
groove tolerance 6.6-7.7mm
groove tolerance 8.1-
8.2mm
Part Number
one week lead time
Part Number
ship same day
Part Number
one week lead time
Part Number
ship same day
300 240 NF06.5-0300L-0450W NF08.0-0300L-0560W Special Order NF08.5-0300L-0650W
500 440 NF06.5-0500L-0700W NF08.0-0500L-1025W NF08.5-0500L-0700W NF08.5-0500L-1100W
1550 1490 Special Order NF08.0-1550L-3480W Special Order Special Order
To convert above metric values to imperial, divide by 25.4. Example: 500 mm/ 25.4 = 19.685”
NOTE: 10mm diameter available by special order.
Nextflex Stocking List
All Nextflex heaters are 230V. Connections: 6.5mm/M3, 8.0mm/M4, 8.5mm/M4
Nextflex part numbers are easy to decode.
NF
Nextflex
08.5
8.5mm ø
300L
300mm Length
0650W
650W @ 230V
N
F
08.
5
30
0L
0650
W

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