Firestone Airmount® Isolator Selection Guide & Data Sheets
# Airmount® pressures below 40 PSIG should be reviewed with Firestone.
**When using the rolled plate end closure option, add 0.7inch to heights shown.
All Triple Convolution & Reversible sleeve except 1X84D1 and 1M1A please consult Firestone for use as an Airmount® Isolator.
Selection Guides are now available on Compact Disc. Please contact us for a copy.


Load (at Design Height) at:

Natural
Frequency (@ 80 PSIG)
fn(cpm)
% of Isolation at Forced Frequency
Style Number
Type
View
Design Height (Inches)
# 40 PSIG (Pounds)
60 PSIG (Pounds)
80 PSIG (Pounds)
400 CPM
800 CPM
1500 CPM
1M1A_0 Shaped Sleeve 2.5 210 330 450
220
 - 91.8 97.8
1M1A_1 Shaped Sleeve 3 235 356 475
162
 90 95.5 98.6
2M1A Shaped Sleeve DO NOT USE 2M1A
AS
 AN Airmount Isolator
2M2A Shaped Sleeve 2 73 105 137
232
 - 90.8 97.5
110 Single Convolution 4.5 650 1,010 1,390
162
 80.2 95.7 98.8
113 Single Convolution 5 3,220 5,030 6,890
150
 83.6 96.4 99
113_1 Single Convolution 5.5 3,820 5,900 7,990
133
 87.7 97.2 99.2
115 Single Convolution 4.5 1,180 1,750 2,350
166
 79.1 95.5 98.8
116 Single Convolution 4.5 850 1,330 1,830
163
 80.2 95.7 98.8
116-1 Single Convolution 5.5 940 1,410 1,930
139
 86.3 96.9 99.1
119** Single Convolution 5 5,490 8,450 11,450
138
 86.5 96.9 99.1
121** Single Convolution 5 6,450 10,300 14,450
142
 85.5 96.7 99.1
126** Single Convolution 5 11,030 16,710 22,460
133
 87.5 97.1 99.2
131 Single Convolution 3.5 550 850 1,170
181
 74.4 94.6 98.5
138_15 Single Convolution 6 15,870 24,490 32,890
124
 89.3 97.5 99.3
148-1 Single Convolution 5.5 32,860 50,290 67,690
118
 90.5 97.8 99.4
153_2 Single Convolution 6 4,564 7,048 9,682
121
 89.9 97.7 99.3
16 Single Convolution 3 420 640 880
237
 - 90.3 97.4
16ST Single Convolution 3 400 600 800
240
 87 97 99.2
19 Single Convolution 5 2,130 3,310 4,500
156
 82.1 96 98.9
19_075 Single Convolution 5.5 1,890 2,950 4,080
156
 82 96 98.9
20 Double Convolution 8.5 990 1,540 2,130
116
 90.7 97.8 99.4
20_2 Double Convolution 10 1,184 1,848 2,531
97
 93.7 98.5 99.5
200 Double Convolution 9.5 13,290 20,390 27,330
93
 94.2 98.6 99.6
203** Double Convolution 9.5 7,210 11,100 14,970
97
 93.7 98.5 99.6
21 Double Convolution 9.5 3,030 4,750 6,540
105
 92.6 98.3 99.5
21_2 Double Convolution 10.5 3,460 5,350 7,280
95
 94.1 98.6 99.6
211/215 Double Convolution 10.5 15,840 24,140 32,550
86
 95.1 98.8 99.7
22 Double Convolution 9.5 2,060 3,170 4,280
106
 92.4 98.2 99.5
22_15 Double Convolution 10.5 1,930 3,030 4,130
106
 92.4 98.2 99.5
224 Double Convolution 6.5 730 1,130 1,530
126
 89 97.5 99.3
233_2 Double Convolution 11.25 3,413 5,631 7,691
89
 95 98.8 99.7
248_2 Double Convolution 11 30,830 47,720 63,890
83
 95.5 98.9 99.7
25 Double Convolution 5.5 430 670 910
154
 82.5 96.1 98.9
255_15 Double Convolution 6 566 871 1,194
129
 87.6 97.2 99.2
26 Double Convolution 8 790 1,230 1,670
111
 91.6 98 99.4
28** Double Convolution 9.5 4,590 7,010 9,590
101
 93.2 98.4 99.5
29** Double Convolution 9.5 9,780 14,860 20,060
92
 94.4 98.7 99.6
312** Triple Convolution 13 5,100 7,930 10,730
80
 95.8 99 99.7
313 Triple Convolution 13 3,310 5,120 7,020
82
 95.6 98.9 99.7
319/321 Triple Convolution 15 16,220 24,690 33,290
70
 96.8 99.2 99.8
320** Triple Convolution 14 10,340 15,580 21,080
73
 96.5 99.2 99.8
323** Triple Convolution 13 7,380 11,520 15,550
77
 96.1 99.1 99.7
333 Triple Convolution 14.7 3,282 5,167 7,000
77
 96.1 99.1 99.7
348_3 Triple Convolution 15 31,480 47,870 64,870
68
 97 99.3 99.8
352 Triple Convolution 13.5 2,319 3,631 5,017
77
 95.9 99 99.7
1T12E_3 Reversible Sleeve 10.5 290 450 600
73
 96.5 99.2 99.8
1T14C_1 Reversible Sleeve 10 1,210 1,880 2,540
86
 95.1 98.8 99.7
1T14C_3 Reversible Sleeve 11 1,230 1,890 2,570
76
 96.2 99.1 99.7
1T14C_7 Reversible Sleeve 13.5 1,250 1,910 2,600
64
 97.4 99.4 99.8
1T15L_4 Reversible Sleeve 11 2,650 4,080 5,510
82
 95.6 98.9 99.7
1T15M_0 Reversible Sleeve 7.5 2,670 4,120 5,540
94
 94.1 98.6 99.6
1T15M_2 Reversible Sleeve 9.5 2,850 4,370 5,900
86
 95.2 98.8 99.7
1T15M_4 Reversible Sleeve 12.5 2,760 4,200 5,670
71
 96.8 99.2 99.8
1T15M_6 Reversible Sleeve 15 2,720 4,110 5,560
67
 97.1 99.3 99.8
1T15M_9 Reversible Sleeve 18.5 2,780 4,250 5,680
58
 97.8 99.5 99.8
1T15S_6 Reversible Sleeve 12 2,040 3,140 4,220
74
 96.5 99.1 99.8
1T15T_1 Reversible Sleeve 7 2,100 3,220 4,370
97
 93.7 98.5 99.6
1T19L_11 Reversible Sleeve 18 3,411 5,151 6,911
63
 97.5 99.4 99.8
1T19L-7 Reversible Sleeve 15 3,476 5,264 7,052
70
 96.8 99.2 99.8
1X84D_1 Reversible Sleeve 8 310 500 680
71
 96.8 99.2 99.8
4001 Reversible Sleeve 5.5 150 220 290
105
 92.7 98.3 99.5
7002 Reversible Sleeve 4.5 310 480 650
114
 91.2 97.9 99.4
7010 Reversible Sleeve 8 280 440 600
83
 95.5 98.9 99.7
7012 Reversible Sleeve 8.5 360 590 790
75
 96.3 99.1 99.7
Air Springs Supply P/L Email sales@airsprings.com.au Aust Tel 02 9807 4077 Fax 02 9807 6979 International Tel 612 9807 4077 Fax 612 9807 6979