Form-In-Place EMI Gaskets

Series No. 8000

MAJR Products’ Form-In-Place (FIP) EMI gaskets are offered to facilitate the increasing demand for EMI shielding of smaller profile and mechanically tight tolerance areas for a variety of metal and plastic housings. Our software-driven, automated Form-In-Place EMI gasket dispensing system delivers a custom-programmed, precise bead of conductive elastomer to narrow flanges or edges as small as 0.030 inches (0.762 mm).

The conductive elastomer bead is ideally placed on commercial or military compartmentalized enclosures, cellular handsets, pc cards, or a variety of other mechanically tight products. Quick prototyping and short to medium production runs are our specialty.

Overview

Form-In-Place EMI Gasketing (8000 series) MAJR Products Form-in-Place automated EMI/RFI gasketing is offered to facilitate the increasing demand for shielding of smaller profile and mechanically tight tolerance areas for a variety of metal and plastic housings. Our software driven automated gasket dispensing system delivers a custom programmed precise bead of conductive silicone, also known as conductive elastomer to narrow flanges or edges as small as 0.030 in (0.762 mm).

Custom Product

Technical Information

The robotic bead location holds a pattern positional accuracy to 0.003 in. (0.076 mm) in the X, Y, and Z axis dimensions, and the repeatability of each axis is 0.001 inches (0.025mm). The heated vacuum tooling plate bead dispense area for the X and Y axis is 17 inches by 14 inches. The Z axis dispense area has a range of 3.5 inches. If a bead needs to be dispensed on a part that is over the travel dispense area of the machine, part rotation and dispensing of a second bead path after the first bead path can be performed to complete the gasket.

The conductive particle-filled materials are one-part electrically conductive room temperature curing elastomers. The extruded paste material cures rapidly when exposed to atmospheric moisture. When completely cured, the materials are highly resilient elastomers that exhibit superior adhesion to a variety of substrates and exhibit low volume resistivity.

 

Available Conductive Materials

Materials/Properties
Nickel Graphite Silver Glass Silver Nickel
Silver Aluminum
Silver Copper
Pure Silver
Volume Resistivity (Ohm-cm) 0.06 0.01 0.008 0.01 0.008 0.005
Durometer (Shore A) 65 70 75 68 70 65
Operating Temp. Range (ºF) -55 to +400 -55 to +400 -55 to +400 -55 to +400 -55 to +400 -55 to +400
Specific Gravity 2.29 1.82 3.58 1.86 3.58 4.20
Tack Free 90 90 90 90 90 90
Handling Time (Hr.) 12 to 24 12 to 24 12 to 24 12 to 24 12 to 24 12 to 24
Full Cure (Hr.) 72 to 144 72 to 144 72 to 144 72 to 144 72 to 144 72 to 144
Color Gray Tan Tan Blue/Tan Tan Blue/Tan

This data is for comparison and is not to be stated as a pass/fail specification for Form-in-place EMI Gaskets.

Product Data Sheet

Product Features

Quality

With our ISO-9001:2015 commitment to continuous improvement, we have document set-up and operational procedures for consistent and reliable form-in-place products. Thanks to our 3-axis coordinate measuring system used in conjunction with our form-in-place machine, your FIP gaskets will be consistent and accurate with documented final QA test results.

Product Options

MAJR can provide Non-EMI Form-In-Place

For lids and housings that do not need a conductive seal, we offer a variety of non-conductive elastomer seals that provide exceptional environmental protection and dust sealing.

These sealing compounds are dispensed in the same way as the conductive elastomers and exhibit excellent substrate adhesion with low durometer, “soft” but resilient material properties. Non-conductive materials are available upon request.