Mesco Corporation

Pump Rebuild Kits, Mechanical Seals and Shaft Sleeves

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Tel: 800-925-1987
Fax: 401-683-7590

1676 E Main Rd
Portsmouth, RI 02871

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O-rings

Product Listing

Mesco Corporation offers O-rings in Buna, Viton, EPR, Aflas, Neoprene, and Teflon, Teflon Encapsulted and Kalrez. O-ring size can be determined by measuring the I.D., O.D. and thickness and matching it to the following size identification chart.

1/16″ Cross-Section (w), actual .070″

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-001*

1/32

0.029

3/32

-018

3/4

0.739

7/8

-035

2-1/4

2.239

2-3/8

-002*

3/64

0.042

9/64

-019

13/16

0.801

15/16

-036

2-3/8

2.364

2-1/2

-003*

1/16

0.056

13/64

-020

7/8

0.864

1

-037

2-1/2

2.489

2-5/8

-004

5/64

0.070

13/64

-021

15/16

0.925

1-1/16

-038

2-5/8

2.614

2-3/4

-005

3/32

0101

7/32

-022

1

0.989

1-1/8

-039

2-3/4

2.739

2-7/8

-006

1/8

0.114

1/4

-023

1-1/16

1.051

1-3/16

-040

2-7/8

2.864

3

-007

5/32

0.145

9/32

-024

1-1/8

1.114

1-1/4

-041

3

2.989

3-1/8

-008

3/16

0.176

5/16

-025

1-3/16

1.176

1-5/16

-042

3-1/4

3.239

3-3/8

-009

7/32

0.208

11/32

-026

1-1/4

1.239

1-3/8

-043

3-1/2

3.489

3-5/8

-010

1/4

0.239

3/8

-027

1-5/16

1.301

1-7/16

-044

3-3/4

3.739

3-7/8

-011

5/16

0.301

7/16

-028

1-3/8

1.364

1-1/2

-045

4

3.989

4-1/8

-012

3/8

0.364

1/2

-029

1-1/2

1.489

1-5/8

-046

4-1/4

4.239

4-3/8

-013

7/16

0.426

9/16

-030

1-5/8

1.614

1-3/4

-047

4-1/2

4.489

4-5/8

-014

1/2

0.489

5/8

-031

1-3/4

1.739

1-7/8

-048

4-3/4

4.739

4-7/8

-015

9/16

0.551

11/16

-032

1-7/8

1.864

2

-049

5

4.989

5-1/8

-016

5/8

0.614

3/4

-033

2

1.989

2-1/8

-050

5-1/4

5.239

4-3/8

-017

11/16

0.676

13/16

-034

2-1/8

2.114

2-1/4
* Note – actual cross-section of -001 is 0.040″; -002 is 0.050″; -003 is 0-060″

 

3/32″ Cross-Section (w), actual .103″

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-102

1/16

0.049

1/4

-127

1-7/16

1.424

1-5/8

-153

3-1/2

3.487

3-11/16

-103

3/32

0.081

9/32

-128

1-1/2

1.487

1-11/16

-154

3-3/4

3.737

3-15/16

-104

1/8

0.112

5/16

-129

1-9/16

1.549

1-3/4

-155

4

3.987

4-3/16

-105

5/32

0.143

11/32

-130

1-5/8

1.612

1-13/16

-156

4-1/4

4.237

4-7/16

-106

3/16

0.174

3/8

-131

1-11/16

1.674

1-7/8

-157

4-1/2

4.487

4-11/16

-107

7/32

0.206

13/32

-132

1-3/4

1.737

1-15/16

-158

4-3/4

4.737

4-15/16

-108

1/4

0.237

7/16

-133

1-13/16

1.799

2

-159

5

4.987

5-3/16

-109

5/16

0.299

1/2

-134

1-7/8

1.862

2-1/16

-160

5-1/4

5.237

5-7/16

-110

3/8

0.362

9/16

-135

1-15/16

1.925

2-1/8

-161

5-1/2

5.487

5-11/16

-111

7/16

0.424

5/8

-136

2

1.987

2-3/16

-162

5-3/4

5.737

5-15/16

-112

1/2

0.487

11/16

-137

2-1/16

2.050

2-1/4

-163

6

5.987

6-3/16

-113

9/16

0.549

3/4

-138

2-1/8

2.112

2-5/16

-164

6-1/4

6.237

6-7-16

-114

5/8

0.612

13/16

-139

2-3/16

2.175

2-3/8

-165

6-1/2

6.487

6-11/16

-115

11/16

0.674

7/8

-140

2-1/4

2.237

2-7/16

-166

6-3/4

6.737

6-15/16

-116

3/4

0.737

15/16

-141

2-5/16

2.300

2-1/2

-167

7

6.987

7-3/16

-117

13/16

0.799

1

-142

2-3/8

2.362

2-9/16

-168

7-1/4

7.237

7-7/16

-118

7/8

0.862

1-1/16

-143

2-7/16

2.425

2-5/8

-169

7-1/2

7.487

7-11/16

-119

15/16

0.924

1-18

-144

2-1/2

2.487

2-11/16

-170

7-3/4

7.737

7-15/16

-120

1

0.987

1-3/16

-145

2-9/16

2.550

2-3/4

-171

8

7.987

8-3/16

-121

1-1/16

10349

1-1/4

-146

2-5/8

2.612

2-13/16

-172

8-1/4

8.237

8-7/16

-122

1-1/8

1.112

1-5/16

-147

2-11/16

2.675

2-7/8

-173

8-1/2

4.487

8-11/16

-123

1-3/16

1.174

1-3/8

-148

2-3/4

2.737

2-15/16

-174

8-3/4

8.737

8-15/16

-124

1-1/4

1.237

1-7/16

-149

2-13/16

2.800

3

-175

9

8.987

9-3/16

-125

1-5/16

1.299

1-1/2

-150

2-7/8

2.862

3-1/16

-176

9-1/4

9.237

9-7/16

-126

1-3/8

1.362

1-9/16

-151

3

2.897

3-3/16

-177

9-1/2

9.487

9-11/16

-152

3-1/4

3.237

3-7/16

-178

9-3/4

9.737

9-15/16

 

1/8″ Cross-Section (w), actual .139″

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-201

3/16

0.171

7/16

-229

2-3/8

2.359

2-5/8

-257

5-7/8

5.859

6-1/8

-202

1/4

0.234

1/2

-230

2-1/2

2.484

2-3/4

-258

6

5.984

6-1/4

-203

5/16

.0296

9/16

-231

2-5/8

2.609

2-7/8

-259

6-1/4

6.234

6-1/2

-204

3/8

0.359

5/8

-232

2-3/4

2.734

3

-260

6-1/2

6.484

6-3/4

-205

7/16

0.421

11/16

-233

2-7/8

2.859

3-1/8

-261

6-3/4

6.734

7

-206

1/2

0.484

3/4

-234

3

2.984

3-1/4

-262

7

6.984

7-1/4

-207

9/16

0.546

13/16

-235

3-1/8

3.109

3-3/8

-263

7-1/4

7.234

7-1/2

-208

5/8

0.609

7/8

-236

3-1/4

3.234

3-1/2

-264

7-1/2

7.484

7-3/4

-209

11/16

0.671

15/16

-237

3-3/8

3.359

3-5/8

-265

7-3/4

7.734

8

-210

3/4

0.734

1

-238

3-1/2

3.484

3-3/4

-266

8

7.984

8-1/4

-211

13/16

0.796

1-1/16

-239

3-5/8

3.609

3-7/8

-267

8-1/4

8.234

8-1/2

-212

7/8

0.859

1-1/8

-240

3-3/4

3.734

4

-268

8-1/2

8.484

8-3/4

-213

15/16

0.921

1-3/16

-241

3-7/8

3.859

4-1/8

-269

8-3/4

8.734

9

-214

1

0.984

1-1/4

-242

4

3.984

4-1/4

-270

9

8.984

9-1/4

-215

1-1/16

1.046

1-5/16

-243

4-1/8

4.109

4-3/8

-271

9-1/4

9.234

9-1/2

-216

1-1/8

1.109

1-3/8

-244

4-1/4

4.234

4-1/2

-272

9-1/2

9.484

9-3/4

-217

1-3/16

1.171

1-7/16

-245

4-3/8

4.359

4-5/8

-273

9-3/4

9.734

10

-218

1-1/4

1.234

1-1/2

-246

4-1/2

4.484

4-3/4

-274

10

9.984

10-1/4

-219

1-5/16

1.296

1-9/16

-247

4-5/8

4.609

4-7/8

-275

10-1/2

10.484

10-3/4

-220

1-3/8

1.359

1-5/8

-248

4-3/4

4.734

5

-276

11

10.984

11-1/4

-221

1-7/16

1.421

1-11/16

-249

4-7/8

4.859

5-1/8

-277

11-1/2

11.484

11-3/4

-222

1-1/2

1.484

1-3/4

-250

5

4.984

5-1/4

-278

12

11.984

12-1/4

-223

1-5/8

1.609

1-7/8

-251

5-1/8

5.109

5-3/8

-279

13

12.984

13-1/4

-224

1-3/4

1.734

2

-252

5-1/4

5.234

5-1/2

-280

14

13.984

14-1/4

-225

1-7/8

1.859

2-1/8

-253

5-3/8

5.359

5-5/8

-281

15

14.984

15-1/4

-226

2

1.984

2-1/4

-254

5-1/2

5.484

5-3/4

-282

16

15.955

16-1/4

-227

2-1/8

2.109

2-3/4

-255

5-5/8

5.609

5-7/8

-283

17

16.955

17-1/4

-228

2-1/4

2.234

2-1/2

-256

5-3/4

5.734

6

-284

18

17.955

18-1/4

 

3/16″ Cross-Section (w), actual .210″

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-309

7/16

0.412

13/16

-338

3-1/8

3.100

3-1/2

-367

7-1/2

7.475

7-7/8

-310

1/2

0.475

7/8

-339

3-1/4

3.225

3-5/8

-368

7-3/4

7.725

8-1/8

-311

9/16

0.537

15/16

-340

3-3/8

3.350

3-3/4

-369

8

7.975

8-3/8

-312

5/8

0.600

1

-341

3-1/2

3.475

3-7/8

-370

8-1/4

8.225

8-5/8

-313

11/16

0.662

1-1/16

-342

3-5/8

3.600

4

-371

8-1/2

8.475

8-7/8

-314

3/4

0.725

1-1/8

-343

3-3/4

3.725

4-1/8

-372

8-3/4

8.725

9-1/8

-315

13/16

0.787

1-3/16

-344

3-7/8

3.850

4-1/4

-373

9

8.975

9-3/8

-316

7/8

0.850

1-1/4

-345

4

3.975

3-3/8

-374

9-1/4

9.225

9-5/8

-317

15/16

0.912

1-5/16

-346

4-1/8

4.100

4-1/2

-375

9-1/2

9.475

9-7/8

-318

1

0.975

1-3/8

-347

4-1/4

4.225

4-5/8

-376

9-3/4

9.725

10-1/8

-319

1-1/16

1.037

1-7/16

-348

4-3/8

4.350

4-3/4

-377

10

9.975

10-3/8

-320

1-1/8

1.100

1-1/2

-349

4-1/2

4.475

4-7/8

-378

10-1/2

10.475

10-7/8

-321

1-3/16

1.162

1-9/16

-350

4-5/8

4.600

5

-379

11

10.975

11-3/8

-322

1-1/4

1.225

1-5/8

-351

4-3/4

4.725

5-1/8

-380

11-1/2

11.475

11-7/8

-323

1-5/16

1.287

1-11/16

-352

3-7/8

4.850

5-1/4

-381

12

11.975

12-3/8

-324

1-3/8

1.350

1-3/4

-353

5

4.975

5-3/8

-382

13

12.975

13-3/8

-325

1-1/2

1.475

1-7/8

-354

5-1/8

5.100

5-1/2

-383

14

13.975

14-3/8

-326

1-5/8

1.600

2

-355

5-1/4

5.225

5-5/8

-384

15

14.975

15-3/8

-327

1-3/4

1.725

2-1/8

-356

5-3/8

5.350

5-3/4

-385

16

15.955

16-3/8

-328

1-7/8

1.850

2-1/4

-357

5-1/2

5.475

5-7/8

-386

17

16.955

17-3/8

-329

2

1.975

2-3/8

-358

5-5/8

5.600

6

-387

18

17.955

18-3/8

-330

2-1/8

2.100

2-1/2

-359

5-3/4

5.725

6-1/8

-388

19

18.955

19-3/8

-331

2-1/4

2.225

2-5/8

-360

5-7/8

5.850

6-1/4

-389

20

19.955

20-3/8

-332

3-3/8

2.350

2-3/4

-361

6

5.975

3-3/8

-390

21

20.955

21-3/8

-333

2-1/2

2.475

2-7/8

-362

6-1/4

6.225

6-5/8

-391

22

21.955

22-3/8

-334

2-5/8

2.600

3

-363

6-/12

6.475

6-7/8

-392

23

22.940

23-3/8

-335

2-3/4

2.725

3-1/8

-364

6-3/4

6.725

7-1/8

-393

24

23.940

24-3/8

-336

2-7/8

2.850

3-1/4

-365

7

6.975

7-3/8

-394

25

24.940

25-3/8

-337

3

2.975

3-3/8

-366

7-1/4

7.225

7-5/8

-395

26

25.940

26-3/8

 

New Sizes Available

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-400

1-3/8

1.350

1-7/8

-408

2-3/8

2.350

2-7/8

-416

3-3/8

3.350

3-7/8

-401

1-1/2

1.475

2

-409

2-1/2

2.475

3

-417

3-1/2

3.475

4

-402

1-5/8

1.600

2-1/8

-410

2-5/8

2.600

3-1/8

-418

3-5/8

3.600

4-1/8

-403

1-3/4

1.725

2-1/4

-411

2-3/4

2.725

3-1/4

-419

3-3/4

3.725

4-1/4

-404

1-7/8

1.850

2-3/8

-412

2-7/8

2.850

3-3/8

-420

3-7/8

3.850

4-3/8

-405

2

1.795

2-1/2

-413

3

2.975

3-1/2

-421

4

3.975

4-1/2

-406

2-1/8

2.100

2-5/8

-414

3-1/8

3.100

3-5/8

-422

4-1/8

4.100

4-5/8

-407

2-1/4

2.225

2-3/4

-415

3-1/4

3.225

3-3/4

-423

4-1/4

4.225

4-3/4

-424

4-3/8

4.350

4-7/8

 

1/4″ Cross-Section (w), actual .275″

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

No.

I.D.”

Actual

O.D.”

-425

4-1/2

4.475

5

-442

7-1/4

7.225

7-3/4

-459

15

14.975

15-1/2

-426

4-5/8

4.600

5-1/8

-443

7-1/2

7.475

8

-460

15-1/2

15.475

16

-427

4-3/4

4.725

5-1/4

-444

7-3/4

7.725

8-1/4

-461

16

15.955

16-1/2

-428

4-7/8

4.850

5-3/8

-445

8

7.975

8-1/2

-462

16-1/2

16.455

17

-429

5

4.975

5-1/2

-446

8-1/2

8.475

9

-463

17

16.955

17-1/2

-430

5-1/8

5.100

5-5/8

-447

9

8.975

9-1/2

-464

17-1/2

17.455

18

-431

5-1/4

5.225

5-3/4

-448

9-1/2

9.475

10

-465

18

17.955

18-1/2

-432

5-3/8

5.350

5-7/8

-449

10

9.975

10-1/2

-466

18-1/2

18.455

19

-433

5-1/2

5.475

6

-450

10-1/2

10.475

11

-467

19

18.955

19-1/2

-434

5-5/8

5.600

6-1/8

-451

11

10.975

11-1/2

-468

19-1/2

19.455

20

-435

5-3/4

5.725

6-1/4

-452

11-1/2

11.475

12

-469

20

19.955

20-1/2

-436

5-7/8

5.850

6-3/8

-453

12

11.975

12-1/2

-470

21

20.955

21-1/2

-437

6

5.975

6-1/2

-454

12-1/2

12.475

13

-471

22

21.955

22-1/2

-438

6-1/4

6.225

6-3/4

-455

13

12.975

13-1/2

-472

23

22.940

23-1/2

-439

6-1/2

6.475

7

-456

13-1/2

13.475

14

-473

24

23.940

24-1/2

-440

6-3/4

6.725

7-1/4

-457

14

13.975

14-1/2

-474

25

24.940

25-1/2

-441

7

6.975

7-1/2

-458

14-1/2

14.475

15

-475

26

25.940

26-1/2

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