Inflatable Safety Seal
TM
D MIN
B MAX
F
C
E MIN
A
Materials: Plate: 316 SS Bladder: EPR* O-rings: EPR* Pressures: To 100 psig/6.5 bar g To 115 psig bladder inflation Shaft Sizes: 2.750"/70 mm through 8.00"/200 mm Temperature Limits: 150°F/66°C** * Consult Chesterton Engineering for other materials **Consult Chesterton Engineering for temperatures above these.
On-demand static shaft sealing for added security The Chesterton Inflatable Safety Seal™ is a pneumatic inflatable seal used for static shaft sealing. Used in conjunction with a mechanical seal, the ISS is designed to act as a static seal in the event of unacceptable primary seal leakage and as an interim seal during primary seal rebuild. The overall package is very compact and adds minimal axial length to the complete sealing configuration. The plate is designed such that it is firmly affixed to the process equipment, and the seal is then bolted to it. The overall system is quite robust and adds an element of security and flexibility to any sealing application. Classic uses: Side and bottom mounted mixers and agitators Stern Tubes Larger Pumps The Chesterton Inflatable Safety Seal can be provided to seal a wide array of shaft sizes and to fit most any equipment bolting pattern. A staple of Chesterton’s sealing program, the ISS provides a level of convenience, security and safety that none of these applications should operate without.
Additional flexibility for a wide range of sealing applications
CHESTERTON Inflatable Safety Seal ®
TM
INFLATABLE SAFETY SEAL DIMENSIONAL DATA (INCH) SHAFT SIZE
PLATE OD
A
STUFFING BOX BORE
PLATE THICKNESS
B
C
D
MAX
MAX
MIN
EQUIPMENT MOUNT BOLT CIRCLE BY BOLT SIZE
BORE DEPTH
E MIN 1/2"
5/8"
F 3/4"
7/8"
2.75
8.00
4.50
1.27
5.85
6.04
0.300
3
8.50
4.75
1.27
6.10
6.29
0.300
3.25
8.50
5.00
1.27
6.35
6.54
6.73
3.5
9.00
5.25
1.27
6.60
6.79
6.98
0.300
3.75
9.00
5.50
1.27
6.85
7.04
7.23
0.300
0.300
4
9.50
5.75
1.27
7.10
7.29
7.48
0.300
4.25
9.50
6.00
1.27
7.35
7.54
7.73
0.300
4.5
10.00
6.25
1.27
7.60
7.79
7.98
0.300
4.75
10.00
6.50
1.27
7.60
7.79
7.98
5
11.50
7.25
1.53
8.76
8.95
9.14
0.300
5.25
11.50
7.50
1.53
9.01
9.20
9.39
0.300
5.5
12.00
7.75
1.53
9.26
9.45
9.64
0.300
5.75
12.00
8.00
1.53
9.51
9.70
9.89
0.300
6
12.50
8.25
1.53
9.76
9.95
10.14
0.300
6.25
12.50
8.50
1.53
10.01
10.20
10.39
0.300
6.5
13.00
8.75
1.53
10.26
10.45
10.64
0.300
6.75
13.00
9.00
1.53
10.51
10.70
10.89
0.300
7
13.50
9.25
1.53
10.76
10.95
11.14
0.300
7.25
13.50
9.50
1.53
11.01
11.20
11.39
0.300
7.5
14.00
9.75
1.53
11.26
11.45
11.64
0.300
7.75
14.00
10.00
1.53
11.26
11.45
11.64
0.300
8
14.25
10.25
1.53
12.01
12.20
12.39
0.300
0.300
INFLATABLE SAFETY SEAL DIMENSIONAL DATA (METRIC) SHAFT SIZE
PLATE OD
A
STUFFING BOX BORE
PLATE THICKNESS
B
C
D
MAX
MAX
MIN
70
203
114
80
216
127
90
229
100
EQUIPMENT MOUNT BOLT CIRCLE BY BOLT SIZE
BORE DEPTH
E MIN
F
12 mm
14 mm
16 mm
18 mm
32
148
151
154
157
7.6
32
160
163
166
169
7.6
133
32
167
170
173
176
7.6
241
146
32
180
183
186
189
7.6
110
254
159
32
192
195
198
201
7.6
120
254
165
32
192
195
198
201
7.6
130
292
191
39
226
229
232
7.6
140
305
197
39
233
236
239
7.6
150
318
210
39
245
248
251
7.6
160
318
216
39
252
255
258
7.6
170
330
229
39
264
267
270
7.6
180
343
235
39
277
280
283
7.6
190
356
248
39
283
286
289
7.6
200
362
260
39
302
305
308
7.6
Chesterton ISO certificates available on www.chesterton.com/corporate/iso DISTRIBUTED BY: 860 Salem Street Groveland, MA 01834 USA Telephone: 781-438-7000 Fax: 978-469-6528 www.chesterton.com © A.W. Chesterton Company, 2007. All rights reserved. ® Registered trademark owned and licensed by A.W. Chesterton Company in USA and other countries.
FORM NO. 070659 REV. 1
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