[Beryllium Copper] [Brass] [Inconel] [Monel]
[Nickel] [Phosphor Bronze] [Stainless Steel]

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In the event a listed stock Bellows will not meet your exact requirements, Contact Mini-Flex and we will search our entire database (1000’s) of in-stock bellows for a closer match.

See our “Design Guide” for explanations to the stock list column headings.

Stainless Steel - 300 Series

1

2

3

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5

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9

10

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13

Part Number

Convolution Inside
Diameter
(Inches)

Convolution Outside
Diameter
(Inches)

Wall
Thickness (Inches)

Neck
Outside
Diameter (Inches)

Neck
Length
(Inches)

Convolution Free
Length
(Inches)

Maximum
Deflection in
Compression (Inches)

Spring
Rate
(Lbs./In.)

Effective
Area
(sq.inch)

Critical Squirming Pressure
(P.S.I.G.)

Burst
Pressure
(Restrained) (P.S.I.G.)

Number Of
Convo-
lutions
SS-125-46-66

.105

.230

.0046

.126

.30

.91

.148

66

.022

400

6700

32
SS-125-46-80

.108

.226

.0046

.126

.30

.80

.120

80

.022

440

6500

28

SS-125-46-168

.108

.226

.0046

.126

.08

.40

.060

168

.022

1000

6500

14
SS-159-33-40

.140

.248

.0032

.161

.30

1.34

.200

40

.030

170

3000

35
SS-159-33-69

.140

.248

.0036

.161

.13

1.04

.170

69

.030

330

3000

26
SS-159-36-125

.142

.252

.0036

.161

.29

.56

.090

125

.030

1000

3400

15
SS-159-36-250

.143

.250

.0036

.161

.13

.28

.045

250

.030

1900

3800

7
SS-159-60-117

.134

.260

.0060

.161

.30

1.22

.185

125

.030

450

6300

35
SS-159-60-135

.137

.297

.0060

.161

.25

.81

.170

135

.037

900

6000

19
SS-159-60-140

.137

.288

.0060

.161

.25

.82

.170

140

.035

800

7000

20
SS-159-60-212

.135

.279

.0060

.161

.35

.66

.100

212

.034

900

6300

16
SS-159-60-240

.135

.279

.0060

.161

.35

.55

.090

240

.033

1800

6300

14
SS-159-60-333

.129

.252

.0060

.161

.08

.66

.085

333

.029

*

6300

21
SS-159-60-500

.134

.252

.0060

.161

.35

.45

.055

500

.029

3400

6300

14
SS-159-60-600

.134

.252

.0060

.161

.12

.31

.041

750

.029

*

6300

9
SS-159-60-650

.134

.285

.0060

.161

.37

.20

.042

650

.034

*

6300

5
SS-159-80-270

.130

.298

.0080

.162

.25

.79

.125

270

.036

1700

8000

19
SS-159-80-340

.132

.285

.0080

.162

.25

.78

.105

340

.034

1800

8000

20
SS-159-80-357

.126

.254

.0080

.162

.35

1.20

.150

357

.028

1240

8800

35
SS-159-80-410

.126

.254

.0080

.161

.14

1.08

.105

410

.028

1800

8200

31
SS-159-80-780

.126

.254

.0080

.161

.30

.49

.065

780

.028

*

8200

14
SS-159-80-1200

.125

.259

.0080

.208

.07

.40

.035

1200

.029

*

10,000

11
SS-159-80-1900

.129

.257

.0080

.161

.04

.24

.026

1900

.029

6800

8400

8
SS-159-80-2360

.129

.255

.0080

.161

.06

.16

.018

2500

.029

6000

9200

5
SS-189-50-100

.171

.317

.0050

.189

.25

.66

.140

100

.047

800

3700

17
SS-189-50-137

.169

.317

.0050

.189

.25

.50

.090

137

.046

1000

3300

13
SS-189-50-150

.171

.332

.0050

.189

.10

.39

.080

150

.050

1100

3700

10
SS-189-50-230

.170

.320

.0050

.190

.05

.30

.065

230

.047

*

3800

8

SS-189-50-300

.171

.332

.0050

.190/.299

.05

.20

.040

300

.050

1500

4100

5
SS-250-40-25
.237
.430
.0040
.252
.25
1.080
.310
25
.087
30
2800
23
SS-250-40-38

.237

.380

.0040

.252/.325

.15/.06

1.20

.280

38

.074

*

2900

32
SS-250-40-43

.238

.430

.0040

.252

.25

.51

.150

43

.087

470

2300

11
SS-250-40-47

.234

.375

.0040

.252

.12

1.12

.240

47

.073

160

2300

32
SS-250-40-47-1

.234

.375

.0040

.252

.12

1.20

.300

47

.073

155

2300

32
SS-250-40-60

.234

.375

.0040

.252

.11

.89

.164

60

.073

350

2340

25
SS-250-40-71

.239

.413

.0040

.323

.06

.39

.115

65

.083

500

2300

10
SS-250-40-78

.239

.405

.0040

.252

.11

.41

.105

78

.081

600

2300

10
SS-250-40-80

.239

.412

.0040

.252/.370

.10/.08

.40

.100

80

.083

550

2300

9
SS-250-40-200

.239

.375

.0040

.252

.10

.20

.050

200

.074

*

2300

6
SS-250-50-45

.235

.430

.0050

.252/.327

.15/.06

.99

.265

45

.086

*

2800

23
SS-250-50-110

.232

.375

.0050

.252

.34

1.10

.210

110

.073

450

3300

32
SS-250-50-164

.232

.403

.0050

.252

.05

.40

.090

164

.080

950

3000

11
SS-250-50-238

.232

.374

.0050

.252

.12

.39

.085

238

.072

1100

3000

11
SS-250-50-285

.233

.377

.0050

.252/.372

.12/.09

.43

.070

285

.073

*

3100

11
SS-250-60-137

.230

.375

.0060

.252

.34

1.09

.210

137

.072

550

3800

32
SS-250-60-250

.235

.440

.0060

.253

.12

.39

.100

250

.090

*

3800

6
SS-250-60-265

.230

.404

.0060

.253

.12

.42

.090

265

.088

*

3800

11
SS-250-60-312

.231

.375

.0060

.253

.12

.54

.100

312

.072

*

3950

16
SS-250-60-420

.231

.372

.0060

.253

.04

.38

.070

420

.071

*

3650

11
SS-250-60-430

.230

.374

.0060

.252/.375

.12/NA

.35

.060

430

.073

2500

3800

10
SS-250-60-520

.231

.403

.0060

.252/.325

.12/.07

.20

.035

520

.079

*

3800

5
SS-250-70-800
.228
.371
.0070
.252
.04
.35
.050
800
.071
3900
4700
10
SS-250-70-900

.230

.374

.0070

.252/.435

.05/00

.35

.050

990

.072

3900

4700

10
SS-250-100-225

.222

.448

.0100

.253

.30

1.39

.200

225

.088

*

6600

25
SS-250-100-450

.218

.415

.010

.360

N/A

1.20

.160

450

.078

3900

6000

24
SS-250-100-520B

.218

.403

.0100

.252

.30

1.27

.170

500

.076

2000

6000

26
SS-250-100-540

.220

.415

.0100

.360

N/A

1.55

.110

540

.079

*

7200

21
SS-250-100-550

.223

.390

.0100

.254

.30

1.28

.150

550

.074

*

7200

26
SS-250-100-2000

.206

.375

.0100

.253

.25

.50

.045

2000

.066

7500

6000

10
SS-250-100-2350

.225

.404

.0100

.253

.25

.25

.040

2350

.070

*

7500

5
SS-320-30-14
.308
.512
.0032
.320
.14
1.32
.425
14
.132
TBD
1700
24
SS-320-30-18

.305

.473

.0032

.320

.14

1.21

.340

18

.118

60

1450

25
SS-320-30-33

.307

.493

.0032

.320

.14

.62

.190

33

.125

200

1400

14
SS-320-30-34

.308

.495

.0032

.462

.07

.82

.250

30

.127

140

1400

15
SS-320-30-40

.309

.491

.0030

.320

.14

.50

.125

40

.125

*

1400

11
SS-320-30-51

.308

.449

.0032

.320

.05

.92

.190

51

.113

170

1400

18
SS-320-30-64

.308

.449

.0032

.320

.15

.47

.135

64

.113

380

1400

13
SS-320-30-68

.308

.484

.0032

.320

.14

.44

.120

68

.123

350

1400

8
SS-320-30-74

.308

.484

.0032

.320

.14

.35

.095

74

.123

370

1400

7
SS-320-50-44

.304

.520

.0050

.321

.14

1.24

.375

44

.133

*

3200

24
SS-320-50-60

.304

.524

.005

.321

.14

1.02

.300

60

.134

*

3100

17
SS-320-50-164

.304

.474

.0050

.458

.12

.54

.105

164

.119

1050

3000

14
SS-320-50-190

.298

.478

.0050

.320/.465

.15/NA

.56

.110

190

.118

*

2400

12
SS-320-60-217

.306

.474

.0060

.460

.10

.37

.070

220

.119

*

3550

10
SS-320-80-155

.297

.538

.0080

.321

.14

1.09

.255

155

.137

*

4350

21
SS-320-80-175

.301

.514

.0080

.322/.500

 .09/NA

.79

.200

175

.130

950

4200

16
SS-320-80-250

.299

.520

.0080

.467*

.07

.76

.165

250

.131

*

5400

15
SS-320-80-270

.295

.515

.0080

.321

.14

.96

.205

260

.129

1050

4350

17
SS-375-35-28

.361

.557

.0035

.504

.05

1.03

.180

28

.165

*

1370

23
SS-375-35-31

.362

.551

.0035

.377

.12

1.24

.350

25

.164

75

1500

25
SS-375-36-33

.362

.575

.0036

.501

.09

.69

.180

33

.172

*

1500

12
SS-375-35-38

.362

.571

.0035

.377/.500

.07

.63

.180

38

.171

150

1500

12
SS-375-36-39

.363

.575

.0036

.377/.505

.06

.58

.170

39

.172

*

1400

11
SS-375-35-40

.360

.572

.0035

.377/.498

.15/.07

.61

.160

40

.171

*

1400

11
SS-375-35-66

.362

.574

.0035

.377/.500

.08

.46

.110

66

.172

250

1500

9
SS-375-45-67

.361

.562

.0045

.377

.11

.78

.210

67

.171

380

1650

16
SS-375-45-72

.355

.538

.0045

.377

.06

1.11

.275

65

.157

270

2000

25
SS-375-45-85

.358

.565

.0045

.377/.498

.15/.08

.67

.180

85

.167

*

2500