Master Seal

OUTER DIAMETER

SCREW & BOLT SIZE mm / ”

INNER DIAMETER mm / “

9.5mm 3/8”

11mm 7/16”

12mm

14mm

15mm 16mm

19mm 3/4”

20mm 25/32”

1/4”

1/2”

9/16

5/8” 23/32”

.120

#4

2.9

3.3

●

▲

.150

#6

3.5

3.8

●

▲

●

●

.180

#8

4.2

★

★

★

★

4.6

▲

▲

●

●

●

●

●

.200

#10

4.8

★

★

★

5.1

▲

▲

▲

▲

●

●

●

●

.230

▲ ★ ★ ★ ★ ★ ★ ▲ ▲ ▲

★

▲

● ● ●

#12

5.5

6.1

★

.240

●

.260

●

#14

6.3

7.0

★

▲

▲ ▲ ▲

●

●

.275

.305

#17

7.0

★

★

7.7

●

▲

.330

★

★

▲

●

5/16”

8.0

8.4

★ ★ ★

▲

.360

.410

▲

★

3/8”

9.5

11.0

★

▲

★

.434

.475

7/16”

11.1

★

12.1

▲

.532

1/2”

12.7

13.5

.600

9/16”

14.0

15.2

.650

5/8”

15.9

16.5

.687

11/16”

.710

17.5

18.8

3/4”

.810

19.0

20.6

7/8”

.910

22.2

23.1

1”

1.040

25.4

26.4

1-1/16”

1.100

27.0

28.0

1-1/8”

28.6

1.150

29.6

1-3/16”

30.0

1.21

31.0

1-1/4”

31.8

1.290

32.8

1-9/16”

40.0

40.6

1.6

▲ Popular Outside Diameters ● Optional Outside Diameters ★ Subject to minimum quantity and/or tooling fee