Omega Products OB-300 Installation Manual

OMEGABOND® OB-300

HIGH TEMPERATURE AIR SET CEMENT

INSTRUCTION

SHEET

GENERAL DESCRIPTION

The OMEGA®OB-300 High Temperature Air Cement is a
sodium silicate base, one-part ceramic cement which has
many exceptional characteristics including:

• Resists temperatures to 982°C (1800°F)

• Resists oil, solvents and most acids (except hydrofluoric)

• Heat conductive and thermal shock resistant

• Excellent electrical insulator

• Adheres to metals, ceramics, glass, porcelain and most
other nonplastic surfaces

• Excellent mechanical bonding characteristics

• Ceramic-like body

OMEGA’s OB-300 cement is used for assembling, insulating,
heat treating, and cementing porcelain, glass, metal, and
other materials. It is also used as a replacement for sealing
wax, bolts, nuts, screws, and mica since it adheres quite
readily to practically any non-plastic surface which is clean
and free from oil and grease.

HANDLING INFORMATION

CAUTION

• Avoid prolonged breathing of vapors - work in well­ventilated area

• Protect skin against contamination

• Protect eyes against contamination

• Do not take internally

OMEGABOND®OB-300 Powder is a harmful dust. Avoid
breathing dust by using respirators. Avoid contact with eyes
or skin by wearing gloves and goggles or a face shield. Wash
thoroughly with soap and water after handling. Keep
containers closed.

SHELF LIFE

OMEGABOND®OB-300 Powder has a shelf life of (6)
months when stored in unopened, tightly sealed containers in
a dry location at 21°C (70°F).

SOLVENT

A 10% caustic or alkaline solution such as 10% NaOH
(Sodium Hydroxide) will break down the OB-300 after it has
cured. However, care should be exercised as far as the
compatibility of the caustic solution with any other
components involved in the application, such as the material
or surface that the cured cement has been applied to.

DIRECTIONS FOR USE

OMEGA’s OB-300 Cement is a one-part cement and is
supplied as a powder. Just mix the powder with water to a
smooth, uniform consistency. Avoid using excess liquid as
this will reduce mechanical strength, increase shrinkage and
delay the set time. Surfaces to which the cement will be

applied should be clean and free of dirt or grease. Apply
several coats where heavier layers are desired, allowing
each coat to dry before application of the next coat. Do not
apply OB-300 in thickness greater than 1/4". OMEGA’s
OB-300 cement can be applied by brushing, dipping and
spraying.

Porous substrates should be dampened with OMEGABOND

®

Thinning Liquid (Part No. OB-TL), prior to application of the
mixed cement.

CURING

OMEGA’s OB-300 cures at room temperature by air drying in
18-24 hours, depending upon thickness and consistency.
Cure time can be accelerated by low temperature oven
drying at 82°C (180°F). If the cement is to be exposed to
elevated temperatures, cure for 18-24 hours at ambient
temperature, then oven dry for 4 hours at 82°C (180°F) and
for an additional 4 hours at 104°C (220°F). This helps to
prevent flaking and chipping.

PHYSICAL PROPERTIES*

Maximum Service Temperature: 982°C (800°F)
Thermal Conductivity: 4-6 Btu-in/sq.ft./-hr-°F
Color: Off white
Coefficient of Thermal Expansion: 6.2 x 10-6in/in°F
Dielectric Constant: 3.5-6.0
Dielectric Strength:

At 21°C (70°F): 12.5 to 51.0 volts/mil
At 399°CF (750°): ≤15.0 volts/mil

At 801°C (1475°F): ≤1.3 volts/mil
Compressive Strength: 3900 PSI
Tensile Strength: 410 PSI
Shear Strength: 710 PSI
Modulus of Rupture: 460 PSI
Volume Resistivity:

At 21°C (70°F): 108-109ohm-cm

At 399°C (750°F): 10

4

-105ohm-cm

At 801°C (1475°F): 10

2

-103ohm-cm

*Determined under laboratory conditions using applicable ASTM procedures.
Actual field data may vary. Do not use Physical Properties for specifications.

NOTE

The Material Safety Data Sheet (MSDS) for the OMEGA

®

OB-300 cement is shipped with the product. Additional copies
can be obtained by contacting OMEGA Engineering and
asking for MSDS-0136.

M1237-1110

Shop online at: omega.com e-mail: [e-mail]
For latest product manuals: omegamanual.info

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its
products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase.
OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and
shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR)
number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced
at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling,
improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows
evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or
vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not
warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any
omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of
defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT
THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total
liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise,
shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential,
incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in
or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear
installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic
WARRANTY/ DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage
whatsoever arising out of the use of the Product(s) in such a manner.

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

Toll-Free: 1-800-826-6342 Tel: [phone]
FAX: [phone] e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec), H7L 5A1 Canada
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378/1-800-622-BEST

®

Engineering Service: 1-800-872-9436/1-800-USA-WHEN

®

Mexico/ En Español: 001 [phone] FAX: [phone]
Latin America [e-mail] e-mail:[e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com [e-mail]

Servicing Europe:

Benelux: Managed by the United Kingdom Office

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Czech Republic: Frystatska 184

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: i nf o@omegash op .c z

France: Managed by the United Kingdom Office

Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Toll-Free: 0800 6397678 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified One Omega Drive, River Bend Technology Centre, Northbank

Irlam, Manchester M44 5BD United Kingdom
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

RETURN REQUESTS / INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO
OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER
TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY

RETURNS, please have the following information

available BEFORE contacting OMEGA:

1. Purchase Order number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult OMEGA for current repair charges.

Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and
engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC.

© Copyright 2010 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic
medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.