Extended Heel Cantilever Spring Energized Rod Seal

In some applications, a combination of pressure, temperature and hardware gap will give rise to a situation where the jacket degrades due to extrusion. A simple upgrade for Cantilever Spring Seals is to increase the length of the seal in order to isolate the spring side of the seal from distortion. By specifying and extended heel version, pressure ratings can be doubled over non-extended designs. This can be useful in cases where rebuilds yield larger than normal extrusion gaps or when legacy designs are pushed to higher operating pressures and temperatures to achieve greater performance. Accumulators and pressure intensifiers are common applications for extended heel Cantilever Spring Seals.

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Typical Range of Application

Pressure

Vacuum to 10,000 psi

[0 to 680 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:

EVSE-R-234-LW-ET006-M-S

EVSE = Seal Series
R = Rod
234 = 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®

NON-STANDARD ORDERING EXAMPLE:

EVSE-R-C-02953-LW-ET006-M-S

C

= Nominal Cross-Section



A = 1/16 in. (000 Series)

B = 3/32 in. (100 Series)

C = 1/8 in. (200 Series)

D = 3/16 in. (300 Series)

E = 1/4 in. (400 Series)

02953

= Rod Diameter in 1000ths



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

EVSE 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.

EVSE 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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Engineers

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