3M
TM
Connector Covers
Circular and “D” Type Conductive Covers
3M Connector Covers are made of an intrinsically conductive composite material with uniformly distributed fibers. This makes the cov-
ers free of carbon black particulate and better suited to clean situations. The covers do not leave black marks and are permanently
conductive.
See page 2 for sizes
3M™ Circular Connector Covers 4270 Series
4270 Series were designed to meet the requirements
and intentions of MS90376,and MIL PRF 5501/31A or
2A. Military contractors have qualified these materials to
their own specifications and are encouraging their use.
3M “D” Type Connector Covers 4272 Series
4272 Series were designed to meet the requirements
and intentions of MIL-PRF-5501. Military contractors
have qualified these materials to their own specifications
and are encouraging their use.
Specifications
Typical Properties:
Resistivity
Contact Corrosivity
(Kovar plate)
Crayoning
Elongation
Tensile
Vicat Softening
Outgassing ASTM
ASTM D991
FTMS 101C
Method 3005
3M
ASTM D638
ASTM D638
ASTM MD
E595
<105 ohm-cm
Pass
Not visible
25%
1500 PSI (1.0 x 107 N/m2)
1525 205°F (96OC)
Pass
Chemical Reactions
Dilute Acids
Dilute Alkalines
Concentrated Acids
Concentrated Alkalines
Methanol, Ethanol, and
Isopropanol
Hydrocarbons
Ketones
Oil and Gasoline
Slight Attack
Slight Attack
Severe Attack
Severe Attack
Resistant
Slight Attack
Dissolves
Severe Attack
P
R
O
D
U
C
T
D
A
T
A
S
H
E
E
T
3M is a trademark of 3M Company.
All other trademarks herein are the property
of their respective owners.
4270 and 4272 Series Connector Covers
PRODUCT
ITEM NUMBER
DATASHEET
CONDUCTIVE CONNECTOR COVERS
SEE TABLE
4270
3M Electronics Solutions Division
6801 River Place Blvd
Austin, TX 78726-9000
US and Canada: 866-722-3736
Fax: 866-722-3735
Intl: 919-718-0000; Fax: 919-774-8174
email: 3Mstaticinfo@mmm.com; www.3Mstatic.com
3M™ Circular Connector Covers 4270 Series
Packaged 100/bag: 10 bags/box
Product
Description
4270-4R
4270-5R
4270-6R
4270-8Y
4270-8R
4270-9R
4270-10Y
4270-10R
4270-12Y
4270-12R
4270-14Y
4270-14R
4270-16Y
4270-16R
4270-18Y
4270-18R
4270-19R
A
.670
.670
.670
.670
.740
.750
.750
.840
.860
.970
B
.500
.500
.500
.625
.500
.500
.625
.500
.625
.500
C
.250
.313
.375
.413
.480
.500
.530
.605
.655
.720
.785
.850
.893
.973
D
.336
.399
.461
.483
.540
.586
.595
.665
.715
.775
.845
.905
.963
1.035
Packaged 50/bag: 10 bags/box
Product
Description
4270-20Y
4270-20R
4270-22Y
4270-22R
4270-24Y
4270-24R
4270-25Y
4270-28Y
4270-28R
A
1.406
1.465
1.500
1.590
1.640
1.700
1.810
1.875
1.950
B
.625
.562
.625
.562
.625
.562
.625
.625
.562
C
1.150
1.231
1.270
1.340
1.390
1.463
1.540
1.645
1.715
D
1.215
1.301
1.340
1.410
1.460
1.533
1.580
1.718
1.790
Packaged 25/bag: 10 bags/box
Product
Description
4270-32Y
4270-32R
4270-36Y
4270-36R
4270-40Y
4270-40R
4270-44Y
4270-44R
4270-48Y
4270-48R
A
B
C
D
2.125
2.220
2.340
2.435
2.600
2.660
2.875
2.960
3.125
3.225
.625
.562
.625
.600
.625
.600
.625
.600
.625
.600
1.890 1.970
1.965 2.040
2.140 2.210
2.215 2.290
2.380 2.450
2.440 2.530
2.630 2.700
2.720 2.812
2.880 2.950
2.960 3.050
1.031 .625
1.125 .500
1.125 .625
1.220 .500
1.250 .625 1.028 1.088
1.330 .562 1.093 1.155
1.400 .562 1.125 1.213
Important Notice
All statements, technical information, and recommendations related to
3M’s products are based on information believed to be reliable, but the
accuracy or completeness is not guaranteed. Before using this product,
you must evaluate it and determine if it is suitable for your intended
application. You assume all risks and liability associated with such use.
Any statements related to the product which are not contained in 3M’s
current publications, or any contrary statements contained on your pur-
chase order shall have no force or effect unless expressly agreed upon,
in writing, by an authorized officer of 3M.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture
as of the date of purchase.
3M MAKES NO OTHER WARRANTIES
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
If this product is defective within the warranty period stated above, your
exclusive remedy shall be, at 3M’s option, to replace or repair the 3M
product or refund the purchase price of the 3M product.
Except where
prohibited by law, 3M will not be liable for any indirect, special, inci-
dental or consequential loss or damage arising from this 3M prod-
uct, regardless of the legal theory asserted.
3M “D” Type Connector Covers 4272 Series
Packaged 100/bag: 10 bags/box
Product
Description
A
2.112
2.049
2.216
2.143
1.586
1.495
1.040
.955
.708
.627
B
2.179
2.116
2.283
2.210
1.635
1.562
1.107
1.022
.775
.694
C
2.279
2.216
2.383
2.310
1.735
1.662
1.177
1.122
.849
.794
D
.636
.574
.530
.462
.530
.462
.512
.462
.512
.462
E
.536
.474
.430
.362
.430
.362
.436
.362
.434
.362
F
.469
.407
.363
.295
.363
.295
.369
.295
.367
.295
G
.280
.280
.280
.280
.280
.280
.280
.280
.280
.280
H
.240
.240
.240
.240
.240
.240
.240
.240
.240
.240
4272-50P
4272-50S
4272-37P
4272-37S
4272-25P
4272-25S
4272-15P
4272-15S
4272-9P
4272-9S
P
R
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D
A
T
A
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4270 and 4272 Series Connector Covers
PRODUCT
ITEM NUMBER
DATASHEET
CONDUCTIVE CONNECTOR COVERS
SEE TABLE
4270
3M is a trademark of 3M Company.
3M Electronics Solutions Division
All other trademarks herein are the property
6801 River Place Blvd
of their respective owners.
Austin, TX 78726-9000
US and Canada: 866-722-3736
Fax: 866-722-3735
Intl: 919-718-0000; Fax: 919-774-8174
email: 3Mstaticinfo@mmm.com; www.3Mstatic.com
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