| | | O Rings |  | Introduction
O-rings and other toroidal seals find their way into a vast array of markets and
product applications. Worldwide, there are numerous specifications and standards
pertaining to Basic Rings. The information in this chapter includes the most
widely used specifications and standards set to help designers and manufacturers
select or begin their search or custom design of the proper seal for their
application.
Dimensional Standards and Sizes
Universal Size Table, ISO3601-1, AS 568B, AS 568B (Boss), BS1806, BS-4518,
French NF T 47-501, JIS B 2401, DIN 3771
Gland & Groove Dimensions and Sizes
Universal Size Table, ISO 3601-2, AS 568B, DIN 3771, JIS 2406, Military
Standards
Calculating Design Specifications
Formulas and interactive calculators to assist in basic ring selection and
gland/groove design.
| Dimensional
Standards
Over the last several years, there has been a concerted effort worldwide to
consolidate Basic Ring specifications into a single, worldwide standard. The
result is the International Standards Organization (ISO), which has been the
driving force in this consolidation effort. While Yaseki still recognizes and
manufactures to existing standards, our dimensional, material, and quality
mindset follow the guidelines set forth by ISO. | Specification Index
ISO 3601-1 International standard for metric and inch series O-rings. The
second edition includes the requirements for Aerospace (AS) applications.
SAE AS568B American standard for O-rings. AS-568 is the Aerospace
Standard (AS) as well as the SAE standard and is used for military and
industrial manufacturing in North America.
BS 1806 British standard for inch series O-rings. This standard is
derived from SAE AS-568B.
BS 4518 British standard for metric series O-rings. BS 4518 incorporates
European practices used for sealing components against fluids under dynamic and
static conditions.
JIS B2401 Japanese industrial standard for metric series O-rings. This
standard now includes the second edition of ISO 3601-1.
DIN 3771 German metric standard for fluid-sealing O-rings.
NF T47-501 French standard for O-rings. This standard is similar to the
ISO 3601 and the DIN 3771 standards with some unique class designations. | | | Gland & Groove Standards
Specification Index
ISO 3601-2 International standard for metric and inch series O-rings
gland and groove specification. This standard is not yet available from ISO.
SAE AS568B American standard for O-ring Gland & Groove specifications.
AS-568 is the Aerospace Standard (AS) as well as the SAE standard and is used
for military and industrial manufacturing in North America.
DIN 3771 German metric standard for fluid-sealing O-ring Gland & Groove
specifications.
JIS B2406 Japanese industrial standard for metric series O-ring housings.
Military Standards
MIL-G-5514 Gland Dimensions
MS33649 Boss End Dimensions
MS33656 Boss Fitting End Dimensions | | | | Oil Seals |
 | Wrap up the skeleton rotation axis lip
shape and seal and enclose and divide into two kinds of basic forms
inside
B: There is not pair that wrap up the skeleton rotation axis lip shape
to seal and enclose in the lip
FB: There is pair that wraps up the skeleton rotation axis lip shape to
seal and enclose in the lip
GB 9877.1-88
Size range (Size range)
External diameter: dia. 16-400mm
Width: 20mm |
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 | Outside undisguised shelf rotation axis
lip shape seal and enclose and divide into two kinds of basic forms
W: There is not one pair of lips that expose the skeleton rotation axis
lip shape of the bag to seal and enclose
FW: Have outside one pack of lips the rotation axis lip shape of the
undisguised shelf is sealed and enclosed
GB 9877.2-88
Size range (Size range):
External diameter: dia. 16-440mm
Width: 7-20mm |
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 | The assembly type rotation axis labiate
seal packing collar divides
two kind of fundamental modes
Z: Does not have the vice- lip assembly type rotation axis labiate seal
packing collar
FZ: Has the vice- lip assembly type rotation axis labiate seal packing
collar
GB 9877.3-88
Size range (Size range):
External diameter: dia. 85-440mm
Width: 10-20mm |
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