EMI-Wire-Mesh-Gasket
EMI-Wire-Mesh-Gasket

EMI Wire Mesh Gasket

Series No. 1500

MAJR Products’ Shielding Mesh Tape (1000 Series) is a knitted circular strip of knitted wire mesh providing an effective electromagnetic interference (EMI) shield often used for electrical and electronic cable assemblies. It can also be found in a number of today’s industries in the assembly of RF sensitive electronic equipment as an all-purpose EMI shield that is conformable and easy to integrate. The EMI knitted-mesh construction maximizes conform-ability and flexibility while minimizing bulk and weight. EMI knitted mesh tape commonly comprises of Sn/Cu/Fe (Tin-Steel), Aluminum or Monel wire to provide good physical strength and shielding effectiveness.

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Overview

All Mesh Knitted Wire EMI Gasketing (1500 series) is available in various cross sections to satisfy the many different requirements encountered in EMI/RFI shielding applications. The choice between rectangular, round, round with fin or double round with fin depends on the enclosure or equipment to be shielded.

Product Features:

  • High EMI/RFI Attenuation: The highest possible attenuation levels are achievable with MAJR’s 1500 EMI knitted wire mesh gaskets. Attenuation levels beyond 110 dB in the E-field and 60 dB in the H-field are common with our Wire mesh gaskets.
  • Resilient Materials: MAJR’s knit wire gasketing material acts like thousands of tiny spring members, which are compressed and released with each opening and closing of a cabinet door or enclosure cover. The spring-like EMI mesh gaskets assure long life with consistent point-to-point contact, providing high shielding effectiveness and long life.

Standard Products

All Mesh Rectangular Strip 

-seen below in table #1

HEIGHT WIDTH Monel Part Number Ferrous Part Number
(Tin-Steel)
.062 (1.57) .062 (1.57) 1510-06006-31 1510-06006-34
.062 (1.57) .125 (3.18) 1510-06012-31 1510-06012-34
.062 (1.57) .187 (4.75) 1510-06018-31 1510-06018-34
.062 (1.57) .312 (7.92) 1510-06031-31 1510-06031-34
.062 (1.57) .375 (9.53) 1510-06038-31 1510-06038-34
.062 (1.57) .500 (12.70) 1510-06050-31 1510-06050-34
.093 (2.36) .093 (2.36) 1510-09009-31 1510-09009-34
.093 (2.36) .125 (3.18) 1510-09012-31 1510-09012-34
.093 (2.36) .187 (4.75) 1510-09018-31 1510-09018-34
.093 (2.36) .250 (6.35) 1510-09025-31 1510-09025-34
.093 (2.36) .375 (9.53) 1510-09038-31 1510-09038-34
.125 (3.18) .125 (3.18) 1510-12012-31 1510-12012-34
.125 (3.18) .187 (4.75) 1510-12018-31 1510-12018-34
.125 (3.18) .250 (6.35) 1510-12025-31 1510-12025-34
.125 (3.18) .312 (7.92) 1510-12031-31 1510-12031-34
.125 (3.18) .375 (9.53) 1510-12038-31 1510-12038-34
.125 (3.18) .500 (12.70) 1510-12050-31 1510-12050-34
.125 (3.18) .750 (19.05) 1510-12075-31 1510-12075-34
.125 (3.18) 1.000 (25.40) 1510-12100-31 1510-12100-34
.187 (4.75) .187 (4.75) 1510-18018-31 1510-18018-34
.187 (4.75) .250 (6.35) 1510-18025-31 1510-18025-34
.187 (4.75) .312 (7.92) 1510-18031-31 1510-18031-34
.250 (6.35) .250 (6.35) 1510-25025-31 1510-25025-34
.250 (6.35) .312 (7.92) 1510-25031-31 1510-25031-34
.250 (6.35) .375 (9.53) 1510-25038-31 1510-25038-34
.250 (6.35) .500 (12.70) 1510-25050-31 1510-25050-34
.375 (9.53) .375 (9.53) 1510-38038-31 1510-38038-34

Note: Aluminum, brass (silver-plated) and other materials are available in sizes above. Other sizes are available upon request.

 

All Mesh Round Strip

-seen below in table #2

Diameter Monel Part Number Ferrous Part Number
(Tin-Steel)
.062 (1.57) 1511-06000-31 1511-06000-34
.093 (2.36) 1511-09000-31 1511-09000-34
.125 (3.18) 1511-12000-31 1511-12000-34
.156 (3.96) 1511-16000-31 1511-16000-34
.187 (4.75) 1511-18000-31 1511-18000-34
.250 (6.35) 1511-25000-31 1511-25000-34
.312 (7.92) 1511-31000-31 1511-34000-34
.375 (9.53) 1511-38000-31 1511-38000-34
.500 (12.70) 1511-50000-31 1511-50000-34

Note: Aluminum, brass (silver-plated) and other materials are available in sizes above. Other sizes are available upon request.

 

All Mesh Single Round with Fin Strip

-seen below in table #3

HEIGHT
Round Portion		 WIDTH
Fin Portion		 Monel Part Number Ferrous Part Number
(Tin-Steel)
.062 (1.57) .375 (9.53) 1512-06038-31 1512-06038-34
.062 (1.57) .500 (12.70) 1512-06050-31 1512-06050-34
.093 (2.36) .500 (12.70) 1512-09050-31 1512-09050-34
.125 (3.18) .375 (9.53) 1512-12038-31 1512-12038-34
.125 (3.18) .625 (15.88) 1512-12063-31 1512-12063-34
.125 (3.18) .750 (19.05) 1512-12075-31 1512-12075-34
.156 (3.96) .500 (12.70) 1512-16050-31 1512-16050-34
.187 (4.75) .625 (15.88) 1512-18063-31 1512-18063-34
.250 (6.35) .500 (12.70) 1512-25050-31 1512-25050-34
.250 (6.35) .750 (19.05) 1512-25075-31 1512-25075-34
.250 (6.35) 1.000 (25.40) 1512-25100-31 1512-25100-34
.312 (7.92) .625 (15.88) 1512-31063-31 1512-31063-34
.312 (7.92) .875 (22.23) 1512-31087-31 1512-31087-34
.375 (9.53) 1.000 (25.40) 1512-38100-31 1512-38100-34
.437 (11.10) 1.000 (25.40) 1512-44100-31 1512-44100-34
.500 (12.70) 1.000 (25.40) 1512-50100-31 1512-50100-34

Note: Aluminum, brass (silver-plated) and other materials are available in sizes above. Other sizes are available upon request.

 

All Mesh Double Round with Fin Strip

-seen below in table #4

Round
HEIGHT		 Connecting
WIDTH		 Monel Part Number Ferrous Part Number
(Tin-Steel)
.062 (1.57) .500 (12.70) 1514-06050-31 1514-06050-34
.125 (3.18) .500 (12.70) 1514-12050-31 1514-12050-34
.125 (3.18) .750 (19.05) 1514-12075-31 1514-12075-34
.125 (3.18) 1.000 (25.40) 1514-12100-31 1514-12100-34
.187 (4.75) .625 (15.88) 1514-18063-31 1514-18063-34
.187 (4.75) 1.000 (25.40) 1514-18100-31 1514-18100-34
.250 (6.35) .750 (19.05) 1514-25075-31 1514-25075-34
.250 (6.35) 1.000 (25.40) 1514-25100-31 1514-25100-34
.375 (9.53) 1.000 (25.40) 1514-38100-31 1514-38100-34

Note: Aluminum, brass (silver-plated) and other materials are available in sizes above. Other sizes are available upon request.

Custom Product

Technical Information

Mechanical & Shielding Characteristics of EMI Wire Mesh Strips:

Shielding Effectiveness: Strip from lots are formed into gasket whose inner dimension is 12.00 x 12.00 inches (304.8 x 304.8 mm) Gasket is clamped in a test fixture with thickness deflected a minimum of 20%, EMI test is performed using MIL-STD 285 as a guide. The test is performed at frequencies from .2MHz through 10GHz. (See Table 1)

Shielding Effectiveness vs Frequency – Table 5

Shielding Effectiveness dB

Field Material Code – 31 Monel
Frequency
10kHz 100kHz 1MHz 18MHz 100MHz 400MHz 1GHz 10GHz
H 40 60 80 — — — — —
E — — — 110 — — — —
PW — — — — 110 110 110 100
Field Material Code – 34 Ferrous (Tin-Steel)
Frequency
10kHz 100kHz 1MHz 18MHz 100MHz 400MHz 1GHz 10GHz
H 65 90 100 — — — — —
E — — — 110 — — — —
PW — — — — 110 110 110 100

 

Size vs Tolerance — Table 6

    TOLERANCE
SHAPE SIZE RANGE DIM A DIM B
to .18 (4.57).19 – .38 (4.83 – 9.65).39 – .50 (9.91 – 12.70).51 – 1.00 (!@.95 – 25.40) +.02-0 (+.51-0)+.03-0 (+.76-0)+.046-0 (+1.17-0)+.062-0 (+1.57-0) +.02-0 (+.51-0)+.03-0 (+.76-0)+.046-0 (+1.17-0)+.062-0 (+1.57-0)
to .12 (3.05).13 to .38 (3.30 – 9.65).39 to .50 (9.91 – 12.70).51 to 1.00 (12.95 – 25.40) +.02-0 (+.51-0)+.03-0 (+.76-0)+.046-0 (+1.17-0)+.062-0 (+1.57-0) —
to .18 (4.57).19 – .38 (4.83 – 9.65).39 – .50 (9.91 – 12.70).51 – 1.00 (12.95 – 25.40) +.02-0 (+.51-0)+.03-0 (+.76-0)+.046-0 (+1.17-0)+.062-0 (+1.57-0) NA+.06-03 (+1.52-.76)+ .06 (+1.52)+.09-.06 (+2.29-1.52)

Product Data Sheet