Page 113 - GETELEC catalogue US 2020

COMPRESSION FORCE
“D” Multi-Seal gaskets come in two different resiliencies (as shown below). Optimal compression of the gasket
is 25% of the diameter of the spiral. Since the force to compress the gasket is a function of the cube of the
thickness of the beryllium copper ribbon, the compression forces shown are approximate.
Standard Force: 5.9 kg/cm
Moderate Force: 2.3 kg/cmm 4

SPECIAL ELASTOMER

The standard elastomer is solid silicone. A special elastomer can be specified as shown below (available in
certain sizes only). Note that these elastomers (as with most special options) are non-stock items and will
include additional charges.

/E: EPDM (Example: GTS-DMS-953 /E)
/F: Fluorosilicone
/O: Space Qualified Silicone (non-outgassing)

Available options

SPIRAL MATERIAL
“D” Multi-Seal comes standard with a tin plated Spira-Shield gasket. Other spiral materials or plating may be
specified by choosing a different prefix from the following table.

1. Choose the desired gasket from the table on page 13 based on size and force.
Example: GTS-DMS-953, moderate force, E=9.53 mm, D=4.75 mm
2. Substitute the prefix from the table below based on spiral material and plating.
Example: GTS-DEMT-953, moderate force Flexi-Shield, edge tin/lead plated BC.

Spira-Shield Quick & Ultra Enduro-Shield Flexi-Shield
Quick-Shield
Spiral Tin plated BC Stainless steel Tin plated BC Stainless steel Tin plated BC Stainless steel

Standard : Tin/Lead or no DSS (défaut) DNI DSISS DSINI DST DSQ
plating DMS DNM DSIMS DSINM DMT DMQ

RoHs DIWSS DIWNI DIWSISS DIWSINI DIWST DIWSQ
Tin plating option (IW) DIWMS DIWNM DIWSIMS DIWSINM DIWMT DIWMQ
RoHs edge Tin plating DEIWSS - DEIWSISS - DEIWST -
option (EIW) DEIWMS DEIWSIMS DEIWMT

Example: GTS-DEIWSS-953 “D” Multi-Seal RoHS edge plated Spira-Shield gasket Standard force
(No cord by default).Specify material by choosing the desired prefix from the table.

CORD INSERT
Standard force gaskets come without a cord. We also recommend you omit the cord in moderate force
gaskets specified by “NC” (no cord) in the part number. If over-compression of the gasket is a concern or
problem, remove the “NC” from the part number on moderate force gaskets and PVC cord will be included.

SPECIAL CORD
Special cords including solid fluorosilicone, solid silicone and thermal plastic rubber are available in some
sizes.

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