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I S O L O S S I S O L O S S
®
L S F o a m s
S u m m a r y S h e e t
M a t e r i a l s
8
ISOLOSS LS materials are fine-
celled, low compression-set, high
density polyurethane foams, offer-
ing unique combinations of design
features for difficult mechanical
energy control problems.
ISOLOSS LS products exhibit
very low compression set and
excellent resistance to collapse as
well as good shock absorption and
vibration isolation performance.
They also feature low outgassing
and good dimensional stability, with
tight thickness tolerances.
ISOLOSS LS foams are easily
and cleanly die cut, and can be fab-
ricated with various facings and
combinations of pressure sensitive
adhesives (PSAs). PSA backings
simplify parts installation and
reduce product assembly costs.
ISOLOSS LS foams provide
excellent shock control and cush-
ioning, yet are durable enough for
gasketing, padding and sealing
applications .
Gasketing
ISOLOSS LS materials
meet the gasket and seal require-
ments of UL 50, 508 and 514B.
Vibration isolation
Lightweight
isolation applications take advan-
tage of the foams low stiffness, high
strength and controlled compres-
sion characteristics.
Shock protection
Good durability,
resilience and high energy absorp-
tion make the foams ideal for cush-
ioning and shock applications, in
plain form or laminated to fabrics,
scrims or other facings. Low compression set High energy absorption Effective vibration isolation Low outgassing High internal strength Chemical resistance Flame resistance Broad service temperature range Wide range of thicknesses and
densities
©2004 Aearo Company Printed 6.05 Cat. 208
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
Website: www.earsc.com
E-mail: solutions@earsc.com
Toll-free hotline
(877) EAR-IDEA
(327-4332)
T y p i c a l P r o p e r t i e s
Property
LS-1000LM
LS-1500
LS-2000 LS-2500
Density Nominal kg/m
3
(lb/ft
3
)
ASTM D3574
160 (10)
240 (15)
320 (20)
400 (25)
Flammability
UL 94
Meets HBF
Listed HBF
Listed HBF
Listed HBF
FMVSS-302
Meets
Meets
Meets
Meets
Volume Resistivity
ASTM D257, ohms
1.3 x 10
11
1.3 x 10
11
1.3 x 10
11
1.3 x 10
11
Hardness
ASTM D2240 Durometer
15 sec post impact, Shore O
12
19
25
15 sec post impact, Shore OO
34
Brittleness Temperature C (F)
ASTM D746
-52C (-62F)
-52C (-62F)
-52C (-62F)
-52C (-62F)
Sealing
Qualified for mfrd or natural gas;
diesel, fuel or lubricating oil;
liquidified petroleum gas;
under UL 157 test standards
UL 50
Meets
Listed
Listed
Listed
UL 508
Meets
Listed
Listed
Listed
UL 514B
Meets
Listed
Listed
Listed
Compression Set (%)
(50% compression)
ASTM D1667 22 hr at 23C (73F)
0.60
0.19
0.19
0.76
ASTM D3574 22 hr at 70C (158F)
2.1
3.0
1.3
2.9
ASTM D3574 after
5 hr autoclave at 121C (250F)
1.9
1.4
2.2
2.0
Compression Load
Deflection kPa (psi)
ASTM D3574, Deflection:
25% kPa (psi)
21.4 (3.1)
48 (7)
83 (12)
110 (16)
50% kPa (psi)
37.2 (5.4)
103 (15)
159 (23)
228 (33)
Tensile Strength kPa (psi)
ASTM D3574
338 (49)
586 (85)
862 (125)
1241 (180)
Tear Strength kN/m (lbf/in)
ASTM D624
1.04 (5.9)
1.4 (8.0)
2.1 (12.0)
3.5 (20.0)
Elongation(%)
ASTM D3574
125
100
120
130
Temperature Range C (F)
-40C to 107C
-40C to 107C
-40C to 107C -40C to 107C
Normal Operating
(-40F to 225F) (-40F to 225F) (-40F to 225F) (-40F to 225F)
Recommended Max. Intermittent
120C (248F)
120C (248F)
120C (248F)
120C (248F)
Outgassing
ASTM E595 Modified per Ball
Aerospace BASG 33074 24 hr at 10-5
Torr & 70C (158F), Weight Loss, %
1.0
1.1
6.6
7.2
Volatile Condensable Material, %
1.0
0.036
2.0
3.1
Corrosion Resistance
AMS D3568
Excellent
Excellent
Excellent
Excellent
Cold Flexibility
MIL-P-1240C 4hr at -40C (-40F)
Passes
Passes
Passes
Passes
AMS 3568 4hr at -18C (0F)
Passes
Passes
Passes
Passes
Dielectric Strength
ASTM D149
56 V/mil
56 V/mil
56 V/mil
56 V/mil
The data listed in this materials summary are typical or average values or engineering estimates based on tests conducted by independent
laboratories or by the manufacturer. They are indicative only of the results obtained in such tests and should not be considered as guaran-
teed maximums or minimums. Materials must be tested under actual service to determine their suitability for a particular purpose.