O-Ring Od Cantilever Spring Energized Seal

When considering a rotary service seal and additional gland diameter is available, an O-Ring OD Seal provides a level of anti-rotation and redundant sealing. The addition of an O-Ring on the OD of a radial seal creates a high friction interface at the bore to counteract rotary forces. Because the O-Ring is a lower durometer than the jacket material, it is more compliant and offers tight sealing on the bore. This feature is utilized in equipment such as vapor recovery and vacuum pumps where running friction needs to be low and sealing efficiency high.

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Typical Range of Application

Pressure

Vacuum to 3,000 psi

[0 to 200 bar]

Temperature*

-320°F to 450°F

[-195°C to 230°C]

Ratings will vary based on materials and operating conditions

*Limited by O-Ring compound

Values and ratings in this catalog are based on industry standard applications operating under ideal conditions. The customer should assume responsiblity for validation testing of performance and suitabilty of Eclipse Engineering products. Eclipse Engineering accepts no liabilty for the accuracy and applicabilty of provided information.

STANDARD ORDERING EXAMPLE:

EVSR-R-548-LW-ET006-M-S-N

EVSR = Seal Series
R = Rod
548 = Dash Number
LW = Lip Style
ET006 = Seal Material Code
M = Spring Load L – Light M – Medium H – Heavy
S = Spring Material S – Stainless Steel E – Elgiloy® H – Hastelloy®
N = O-Ring Material N – Nitrile (NBR) F – Fluorocarbon (FKM) E – Ethylene Propylene (EPDM)

NON-STANDARD ORDERING EXAMPLE:

EVSR-R-C-02953-LW-ET006-M-S-N

C

= Nominal Cross-Section


A = 1/4 in. (400 Series)

B = 5/16 in. (500 Series)

C = 3/8 in. (600 Series)

D = 7/16 in. (700 Series)

E = 1/2 in. (800 Series)

02953

Rod Diameter in 1000ths


Example: 02953 = Ø2.953 [75MM] Rod Diameter

EVSR STANDARD SEAL MATERIALS

Eclipse Material Code Description Color Applications
ET000 Virgin PTFE White Light Duty / Static / Cryogenics
ET006 Carbon filled PTFE Black General Purpose
EU000 Virgin UHMWPE Translucent White Viscous Media / Water
ET014 Polyimide filled PTFE Orange/Brown High Sealabilty / Soft Hardware

See Eclipse Material Guide for complete list of available materials.

EVSR STANDARD SPRING MATERIALS

Eclipse Material Code Spring Material Application
S 300 Series Stainless Steel General purpose, standard spring material
E Elgiloy® Improved performance and corrosion resistance; NACE approved
H Hastelloy® C276 Maximum chemical/corrosion resistance

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