1. Fluoroelastomer
LTFE 6400
Technical Information
Features
• TR10 = -40°C which
means true dynamic
sealing capability at
low temperatures
• Very good chemical
resistance against
most chemicals such
as acids, fuels, oils
and alcohols
•Processes comparably
to other peroxide-cured
fluoroelastomers
• Good oil resistance
• Good compression set
resistance with low/no
post-cure
• Good damping
properties
Typical Properties (Data not for specification purposes)
Fluorine Content [QCM 50.18.3.C] 67.1
Specific Gravity [QCM 14.10.C] 1.86
Color Translucent, Clear – Amber
Form Slab
Glass Transition Temperature -40°C (-40°F)
Brittleness Point -60°C (-76°F)
Mooney Viscosity – ML(1+10) @ 121°C 85
Dyneon
TM
Introduction
Dyneon™
LTFE 6400 is a technically advanced low temperature, peroxide-cured fluoroelastomer.
It is designed to meet the challenging demands of the automotive, aerospace and chemical
processing industries, requiring low temperature sealing in chemically aggressive environments.
LTFE 6400 offers a unique low temperature sealing capability of TR10 = -40°C as well as broad
chemical resistance.
Product Form
LTFE 6400 is packaged in slab form and is available in 2.2 lb (1 kg) and 55.1 lb (25 kg) boxes.
Safety/Toxicology
Before processing Dyneon™
Fluoroelastomers, read and follow all precautions and directions
for use contained in the product label and Material Safety Data Sheet (MSDS). General handling
precautions and directions for use include: (1) Store and use all Dyneon fluoroelastomers
only in well ventilated areas; (2) Do not smoke in areas contaminated with dust from Dyneon
fluoroelastomers; (3) Avoid eye contact; (4) After handling Dyneon fluoroelastomers wash
any contacted skin with soap and water. Potential hazards, including evolution of toxic vapors,
can occur during compounding or processing under high temperature conditions. When
compounding, be sure to read and follow all precautions and directions for use from other
compound ingredient suppliers.

2. Technical Information and Test Data
Technical information, test data, and advice provided by Dyneon personnel are based on information and
tests we believe are reliable and are intended for persons with knowledge and technical skills sufficient
to analyze test types and conditions, and to handle and use raw polymers and related compounding
ingredients. No license under any Dyneon or third party intellectual rights is granted or implied by virtue
of this information.
LTFE 6400
Important Notice:
Because conditions of product
use are outside Dyneon’s
control and vary widely, user
must evaluate and determine
whether a Dyneon product will
be suitable for user’s intended
application before using it. The
following is made in lieu
of all express and implied
warranties (including
warranties of merchantability
and fitness for a particular
purpose): If a Dyneon
product is proved to be
defective, Dyneon’s only
obligation, and user’s only
remedy, will be, at Dyneon’s
option, to replace the
quantity of product shown
to be defective when user
received it or to refund user’s
purchase price. In no event
will Dyneon be liable for
any direct, indirect, special,
incidental, or consequential
loss or damage, regardless of
legal theory, such as breach
of warranty or contract,
negligence, or strict liability.
© Dyneon 2007
Issued: 4/07
Printed in the USA
98-0504-1475-8
All Rights Reserved
Dyneon LLC
6744 33rd Street North
Oakdale, MN 55128 USA
Toll Free: +1 800 723 9127
Phone: +1 651 733 5353
Fax: +1 651 737 7686
www.dyneon.com
Typical Properties of Vulcanizate (Data not for specification purposes)
Compound
LTFE 6400 100
MT Black (N990) 50
Zinc Oxide 5
Peroxide (VAROX®
DBPH - 50) 2.5
Co-agent (TAIC®
, 72% active) 2.5
Total 160
Typical Rheological Properties Alpha Technologies Moving Die Rheometer
(MDR2000) 100 cpm, 0.5° Arc, 12 minutes @ 177°C (350°F) [QCM 2.19.1.C]
ML, Minimum Torque, inch-lb (dN m) 4.0 (4.5)
ts2, Time to 2 inch-lb rise from minimum - minutes 0.5
t’50, Time to 50% cure - minutes 0.7
t’90, Time to 90% cure - minutes 2.1
MH, Maximum Torque, inch-lb (dN m) 16.3 (18.4)
Typical Physical Properties [QCM 125.17.C] Press Cure 10 minutes @ 177°C
(350°F)
Tensile, psi (MPa) 1690 (11.8)
100% Modulus, psi (MPa) 705 (4.9)
Elongation at break, % 190
Hardness, Shore A (ASTM D 2240) 70
Post Cure 16 hours @ 230°C (446°F)
Tensile, psi (MPa) 1965 (13.7)
100% Modulus, psi (MPa) 775 (5.4)
Elongation at break, % 180
Hardness, Shore A (ASTM D 2240) 73
Compression Set, %, Post Cure 214 O-Rings [ASTM D 395 Method B, (O-Rings)]
70 hrs @ 150°C (302°F) 15
70 hrs @ 200°C (392°F) 26
168 hrs @ 200°C (392°F) 32
Our Worldwide Commitment To Quality
Indicative of our commitment, all Dyneon design, development, production and service facilities have
achieved global quality management certification. Production facilities have also received certification for
their environmental management system. Please see the Dyneon website (www.dyneon.com) for the
most up-to-date certification details.
Dyneon is a trademark of 3M.
Used under license.
VAROX is a trademark of Vandebilt Co.
TAIC is a trademark of Nippon Kasei Co. Ltd.
TR10 [ASTM D 1329]°C (°F) -40 (-40)