Action Seals & Gaskets

 
Standard O-Ring Sizes and Dimensions
Chart AS568A -309 through -395

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

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