XHT-BD, XHT-BDX, and
XHT-BDZ

Performance Lubricants

Product Information
Krytox™ XHT-BD series oils are special extreme hightemperature greases with low oil evaporation that arethickened with a non-melting thickener to allow use
at temperatures above the melting point of common
greases. They have excellent lubrication over a broad
temperature range. Krytox™ XHT-BD series greases
are nonflammable and chemically inert. Krytox™ allows
extended lubrication intervals and longer equipment life.
Krytox™ XHT-BD greases are designed for use wherethe temperatures are in the 288 °C (500 °F) range andhigher, where there is a danger of melting the standard
PTFE thickener. This grease uses a special non-melting
high temperature thickener. The base oil is an extremely
viscous oil that provides good viscosity and lower
evaporation at high temperatures. Krytox™ XHT-BD
greases are for use in low speed bearings or in pillow
housings and will shear at high speeds, causing loss ofoil in sealed bearings. The oil in the grease can begin toslowly evaporate at temperatures above 330 °C (626 °F),
and this will occur at an increasing rate as temperatures
increase. Re-lub­rication could be required at thesetemperatures to achieve optimum life.

Compatibility with Metals
Due to their low surface tensions, Krytox™ oils easily wet
metallic surfaces; and, because of their inertness, Krytox™
oils have little or no adverse effect on metals. Testing ofmetals at 340 °C (644 °F) in the absence of air has shown
little evidence of corrosion. In the presence of air, corrosion
was slightly higher. The presence of molybdenum in themetals improved corrosion resistance.

Performance Lubricants

Krytox™

Typical Properties of Krytox™ XHT-BD Series PFPE Grease*
XHT-BD

XHT-BDX

XHT-BDZ

Standard NLGI Penetration Grade

1.5

1.5

1.5

Estimated Useful Range, °C (°F)

–20–300 (–4–572)
with spikes to330 (626)–15–350 (5–662)
with intermittent spikes to
400 (752)–5–360 (23–680)
with intermittent spikes to≥400 (≥752)

Pour Point, °C (°F)

–25 (–13)–20 (–4)–15 (5)

Base Oil Viscosity, cSt
20 °C (68 °F)
40 °C (104 °F)
100 °C (212 °F)

1,71250047

2,61073865

3,5001,02388

Oil Separation in 30 hr at 99 °C (210 °F), %655

Oil Volatility in 22 hr at 260 °C (500 °F), %, D2595

2.1

1.5

1.1

≤1 x 10–9≤8 x 10–7≤1 x 10–4≤3 x 10–14≤1 x 10–9≤2 x 10–6≤4 x 10–15≤2 x 10–10≤3 x 10–7

White, creamy consistency

White, creamy consistency

White, creamy consistency

2.00

2.00

2.00

Vapor Pressure
20 °C (68 °F) (Knudsen)
100 °C (212 °F) (Knudsen)
200 °C (392 °F) (Knudsen)
Appearance
Specific Gravity at 0 °C (32 °F)* This table gives typical properties (not specifications) based on historical production performance. Chemours does not make any express or implied warranty that these products willcontinue to have these typical properties.

The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

For product information, industry applications, technical assistance, or global distributor contacts, visit krytox.com or within the U.S. and Canada, call 1-844-773-CHEM/2436 or
outside of the U.S., call 1-302-773-1000.
© 2015 The Chemours Company FC, LLC. Krytox™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo aretrademarks of The Chemours Company.
Replaces: H-91815-5
C-10352 (10/15)