Nickel graphite filled conductive shieldoseal 3991

Shieldoseal creates an electrically and thermally conductive connection between components. Used for ESD and EMI shielding applications.

Shieldoseal is a 65-durometer adhesive sealant, filled with electrically conductive particles. The sealant will cure within 24 hours, but ultimate physical properties could take up to 72 hours to develop. Shieldoseal should adhere excellently to most substrates

Shieldoseal for EMI shielding

One of the applications of Shieldoseal is EMI shielding. Shieldoseal has excellent filling properties, therefore almost any surface can be filled up. Shieldoseal cures quickly at room temperature. When fully cured, the substance remains as elastic as rubber and is homogeneously conductive. In addition, it especially distinguishes itself from other substances by a high level of heat conductivity. Shieldoseal is pasty and can be used to glue metals (copper, aluminium, stainless steel, brass, etc.), ceramics and most plastics. Properties for individual applications are listed in the table below.

Specifications Nickel graphite filled conductive 1-component sealing

Specification Part number 3991
Conductive particles Nickel graphite
Shore A 65
Tensile Strength 178 psi
Specific Gravity 2.39
V.R. Ohm-cm 0.02
Color Gray
Shelf life Six months from date of manufacture

Conductive adhesive

Specification Unit 3991
Metal with metal   Good
Metal with RFI gasket   Good
RFI gasket with RFI gasket   Good
Viscosity upon delivery   Viscous
Toluene solvent N/cm 5
Catalyst 21 °C Air humidity
Resistance against UV, ozone Yes
Storage time: plastic cartridges Weeks 2
Storage time: aluminium Weeks 8


Specification Unit 3990/3991
Curring at room temperature 21 °C Yes
Film formation at 0,2 mm strength approx. Minutes 1 - 4
Curing at 0,2 mm strength approx Minutes 5 - 20
Curing based on film strength and venting surface approx. Minutes 3 - 180
Odorless   No


For this product there are no free samples available

Shieldoseal 130 gram plastic cartridges
3991 Shieldoseal comes in 130 gram plastic cartridges
Nickel graphite filled conductive 1-component sealing supplied with sealant gun easily handle
Nickel graphite filled conductive 1-component sealing can be supplied with a sealant gun to easily handle the product
Shieldoseal sealant gun available separately request
Shieldoseal 3991 sealant gun. The sealant gun is available separately on request


To get a quotation for Shieldoseal within 24 hours fill in the form below.

Nickel graphite filled conductive 1-component sealing
3991 comes in 130 gram - plastic cartridge
*other cartridges on request
* Note: The red blocks are required