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O-Ring
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Your Partner for Sealing Technology
Your Partner for Sealing Technology
Busak+Shamban is a major international sealing force,
uniquely placed to offer dedicated design and development
from our market leading product and material portfolio; a
one-stop shop providing the best in elastomer, thermoplastic,
PTFE and composite technologies for applications in
aerospace, industrial, and automotive industries.
Facilities are certified to ISO 9001:2000 and ISO/TS 16949:2002,
with many manufacturing sites also working to QS9000 and
VDA 6.1. Busak+Shamban, as the global sales and marketing
organisation of Trelleborg Sealing Solutions, is backed by the
experiences and resources of one of the world's foremost
experts in polymer technology, Trelleborg AB.
With 50-years experience, Busak+Shamban engineers support
customers with design, prototyping, production, test and
installation using state-of-the-art design tools. An
international network of over 70 facilities worldwide includes
30 manufacturing sites, strategically positioned research and
development centres, including materials and development
laboratories and locations specialising in design and
applications.
The information in this brochure is intended to be for general reference purposes only and is
not intended to be a specific recommendation for any individual application. The application
limits for pressure, temperature, speed and media given are maximum values determined in
laboratory conditions. In application, due to the interaction of operating parameters,
maximum values may not be achieved. It is vital therefore, that customers satisfy themselves as
to the suitability of product and material for each of their individual applications. Any
reliance on information is therefore at the user's own risk. In no event will Busak+Shamban be
liable for any loss, damage, claim or expense directly or indirectly arising or resulting from the
use of any information provided in this brochure. While every effort is made to ensure the accu-
racy of information contained herewith, Busak+Shamban cannot warrant the accuracy or com-
pleteness of information.
To obtain the best recommendation for a specific application,
please contact your local Busak+Shamban marketing company.
Developing and formulating materials in-house, we utilise
the resource of our material database, including over 2,000
proprietary compounds and a range of unique products.
Busak+Shamban fulfil challenging service requirements,
supplying standard parts in volume or a single
custom-manufactured component, through our integrated
logistical support, which effectively delivers over 40,000
sealing products to customers worldwide.
This edition supersedes all previous brochures.
This brochure or any part of it may not be reproduced without permission.
® All trademarks are the property of Busak+Shamban and Trelleborg AB.
The turquoise colour is a registered trademark of Busak+Shamban.
© Busak+Shamban, 2006. All rights reserved.
O—Ring
Content
Company profile
...................................................................3
A
General information
...............................................................5
A.1
Description ..........................................................................5
A.2
Applications .........................................................................5
A.3
Method of operation ..................................................................6
B
Technical information
.............................................................7
B.1
Materials ............................................................................7
B.1.1
Elastomers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
B.1.2
Application parameters of elastomers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
B.1.3
Characteristics and inspection of elastomers
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
B.1.4
Special requirements - authorities and approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
B.1.5
Standard materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
B.2
Design recommendations ............................................................. 37
B.2.1
Installation recommendations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
B.2.2
Initial compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
B.2.3
Elongation - compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
B.2.4
Methods of installation and design of seal housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
C
Dimensions and product range
................................................... 48
C.1
Dimensions and international standards ................................................. 48
C.1.1
O—Ring range of sizes (including ordering examples and instructions at the end of the section)
. . . . . . . . . . 48
C.1.2
O—Ring Dimensions according to AS 568 B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
C.1.3
O—Ring dimensions for straight thread tube fitting sizes, AS 568 B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
C.1.4
O—Ring dimensions for metric thread with conical recess according to ISO 6149 . . . . . . . . . . . . . . . . . . . . . . 126
C.2
Tolerances of dimensions ............................................................ 127
C.3
O—Ring quality acceptance criteria ..................................................... 129
C.4
Seal set ........................................................................... 131
D
Special O—Rings
.................................................................. 132
Isolast
®
(FFKM) O—Rings .............................................................. 132
D.1
D.2
FEP encapsulated O—Rings ............................................................ 132
D.3
PTFE O—Rings ....................................................................... 136
D.4
Polyurethane O—Rings ................................................................ 138
D.5
Round cord rings (butt vulcanised) .................................................... 141
D.6
O—Ring surface treatments ............................................................ 143
D.6.1
O—Rings free of substances affecting the lacquer coating - “Labs-free“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
D.6.2
O—Ring friction reducing processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
E
General quality criteria and storage guidelines
................................. 150
E.1
Quality criteria ..................................................................... 150
E.2
Storage and shelf life ................................................................ 150
Index
............................................................................ 152
Latest information available at www.busakshamban.com
Edition February 2006
1
O—Ring
Latest information available at www.busakshamban.com
Edition February 2006
2
O—Ring
Busak+Shamban
Busak+Luyken was founded in 1954 as a Marketing
company to supply O—Rings to the German market. By
1958 Busak+Luyken were distributors of thermoplastic
seals for W.S. Shamban, USA. After the take-over of W.S.
Shamban in 1992, the company changed the name to
Busak+Shamban. Since then Busak+Shamban has grown to
a world-wide network of R&D Centres, Manufacturing
Facilities, Marketing Companies and Logistic Centres.
In addition Busak+Shamban has strategic alliances with
several well-chosen third party suppliers. The sale of
products is carried out by over 40 Marketing Companies
world-wide.
This enables Busak+Shamban to satisfy customer demands
and provide an extensive service, which covers the mass
production to the small quantities market.
The quality assurance system has been approved to ISO
9001:2000, ISO/TS 16949:2002 and in addition since 2000 to
QS 9000.
Most of the group members and partners are also
approved to the ISO 9000 and following standards.
With state-of-the-art laboratories as well as 8 strategically
located R&D centres, Busak+Shamban is able to develop
new materials and proprietary seals.
Busak+Shamban has developed surface treatments for
elastomer O—Rings, offering a variety of high-quality
methods to reduce friction.
The co-operation with German companies for the
production of automatic assembly equipment and for
surface technology serves as a basis for this knowledge.
Since 2003 Busak+Shamban forms part of Trelleborg
Sealing Solutions, a business area within Trelleborg AB.
Source: Ohrmann Montagetechnik GmbH,
M ¨ hnesee, Germany
Latest information available at www.busakshamban.com
Edition February 2006
3
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