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Gland Design
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The data in this website are found to be useful to us.  Use at your own risk.

Picture

Note 1: Groove Depth = machined channel
Gland Depth = Groove Depth + Clearance

Note 2:  The following sizes are not normally recommended for dynamic service, although special applications may permit their use:

Note 3:  Clearance shown are based on 70 durometer materials.  The clearances must be held to an absolute minimum consistent with design requirements for temperature variations and should not exceed the values shown.

Note 4.  Total indicator reading between groove and adjacent bearing surface.  All surfaces and corners musts be free of tool marks and scratches.

-001 thru -003
-013 thru -050
-117 thru -178

-223 thru 284
-350 thru -395
-461 thru -475

General Purpose (Static)

Cross Section
in mm

Width 
(W)

 Depth
(L)

1.00

1.30

0.80

1.50

1.80

1.10

2.00

2.60

1.50

2.50

3.20

1.90

3.00

3.90

2.30

3.50

4.50

2.70

4.00

5.20

3.15

4.50

5.80

3.60

5.00

5.50

4.30

5.50

6.00

4.70

6.00

6.50

5.00

6.50

7.00

5.50

7.00

7.50

5.70

7.50

8.00

6.60

8.00

8.50

6.80

8.50

9.00

7.23

9.00

9.50

7.65

9.50

10.00

8.08

10.00

10.50

8.50

Liquid Gland (Dynamic)

C/S

Width (W)

Depth (L)

1.00

1.30

0.90

1.50

1.90

1.30

1.60

2.00

1.40

1.78

2.30

1.50

1.90

2.40

1.60

2.00

2.40

1.70

2.40

2.90

2.10

2.50

3.00

2.20

2.62

3.10

2.30

2.70

3.20

2.40

3.00

3.60

2.60

3.50

4.20

3.10

3.53

4.20

3.10

3.60

4.30

3.20

4.00

4.80

3.50

4.50

5.40

4.00

5.00

6.00

4.45

5.33

6.40

4.70

5.50

6.60

4.95

5.70

6.90

5.10

6.00

7.20

5.40

6.50

7.80

5.80

6.99

8.40

6.30

7.00

8.40

6.30

7.50

9.00

6.70

8.00

9.60

7.20

8.40

10.10

7.60

8.50

10.20

7.70

9.00

10.80

8.20

9.50

11.40

8.60

10.00

12.00

9.10

Air Gland (Dynamic)

C/S

Width (W)

Depth (L)

1.00

1.30

0.95

1.50

1.90

1.35

1.60

2.00

1.45

1.78

2.30

1.55

1.90

2.40

1.75

2.00

2.40

1.80

2.40

2.90

2.15

2.50

3.00

2.25

2.62

3.10

2.35

2.70

3.20

2.45

3.00

3.60

2.75

3.50

4.20

3.25

3.53

4.20

3.25

3.60

4.30

3.35

4.00

4.80

3.70

4.50

5.40

4.20

5.00

6.00

4.65

5.33

6.40

4.95

5.50

6.60

5.15

5.70

6.90

5.35

6.00

7.20

5.65

6.50

7.80

6.10

6.99

8.40

6.60

7.00

8.40

6.60

7.50

9.00

7.10

8.00

9.60

7.60

8.40

10.10

7.90

8.50

10.20

8.00

9.00

10.80

8.50

9.50

11.40

9.00

10.00

12.00

9.50

INDUSTRIAL RECIPROCATING DYNAMIC O-RING SEAL GLANDS

O-Ring Size AS568

006 to 050

102 to 178

201 to 284

309 to 395

410 to 475

O-Ring Cross Section

.070" +/-.003

.103" +/-.003

.139" +/-.004

.210" +/-.005

.275" +/-.006

Gland Depth

.055 to .057

.087 to .090

.119 to .123

.183 to .188

.234 to .240

Squeeze Inches

.010 to .018

.010 to .019

.012 to .024

.017 to .032

.029 to .047

Squeeze %

15 to 25

10 to 18

9 to 17

8.5 to 15

10.5 to 17

Diametrical Clearance Max

.002 to .005

.002 to .005

.003 to .006

.003 to .006

.004 to .007

Groove Width

No Back-Up

One Back-Up

Two Back-Ups

Groove Radius

.090

.145

.203

.005 to .015

.140

.180

.280

.370

.182

.217

.333

.435

.244

.296

.423

.574

.005 to .020

.005 to .030

.005 to .050

.005 to .060

pistonrodinstallation1

L = Gland Depth
L = Groove Depth + Clearance
G = Groove Width
 

Clearance = ABS(( FD - PD ) / 2 )
Groove Depth = ABS(( PD - GD ) / 2)
Gland Depth = ABS(( FD - GD ) / 2)
ABS = Absolute Value

WARNING:

Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the o-ring (Pi x R^2). Otherwise many bad things will happen to your design.

Make sure the squeeze % is sufficiently high enough to seal, but low enough to allow dynamic movements.

Squeeze inches = O-Ring cross section diameter in inches - Gland Depth in inches

Squeeze % = Squeeze inches / Gland Depth in inches

INDUSTRIAL O-RING STATIC CYLINDER APPLICATION

O-Ring Size AS568

004 to 050

102 to 178

201 to 284

309 to 395

425 to 475

O-Ring Cross

Section

.070" +/-.003

.103" +/-.003

.139" +/-.004

.210" +/-.005

.275" +/-.006

Radial

.049 to .055

.080 to .086

.112 to .118

.176 to .184

.225 to .235

Gland Depth

Axial

Radial

.045 to .050

.012-.014

.072 to .080

.014-.026

.100 to .110

.017-.031

.165 to .175

.220 to .230

.021-.039

.034-.056

%

18-19

13.5-25

12.5-29

10-18

12.5-20

Squeeze

Axial

%

.017 .028

25.5-38.5

.020-.034

20-32

.025-.043

.030-.050

.039-.061

18.5-30

14.5-23

14.5-21.5

Groove Width

No Back-Up

.090

.140

.180

.280

.370

One Back-Up

.145

.182

.217

.333

.435

Two Back-Ups

.203

.244

.296

.423

.574

Groove

Radius (R)

.005-.015

.005-.020

.005-303

.005-.050

.005-.060

Eccentricity Max.

.002

.003

.004

.006

.008

staticcylinderinstallation1

WARNING:

Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the o-ring. Otherwise many bad things will happen to your design.

 

L = Gland Depth
L = Groove Depth + Clearance
G = Groove Width
 

Clearance = ABS(( FD - PD ) / 2 )
Groove Depth = ABS(( PD - GD ) / 2)
Gland Depth = ABS(( FD - GD ) / 2)
ABS = Absolute Value

INDUSTRIAL O-RING STATIC FLANGE APPLICATION

O-Ring Size AS568

004 to 050

102 to 178

201 to 284

309 to 395

425 to 475

O-Ring Cross Section

Nominal

Actual

1/16

.070" +/-.003

.3/32

1/8

3/16

1/4

.103" +/-.003

.139" +/-.004

.210" +/-.005

.275" +/-.006

Gland
Depth (L)

.050 to .054

.074 to .080

.101 to .107

.152 to .162

.201 to .211

Squeeze

Actual

.013-.023

.020-.032

.028-.042

.043-.063

.058-.080

%

19-32

20-30

20-30

21-30

21-29

Groove Width (G)

Liquid

.101 to .107

.136 to .142

.177 to .187

.270 to .290

.342 to .362

Vacuum

.084 to .089

.120 to .125

.158 to .164

.239 to .244

.309 to .314

Groove

Radius (R)

.005-.015

.005-.015

.010-.025

.020-.035

.020-.035

staticflangeinstallation

L = Gland Depth
L = Groove Depth + Clearance
G = Groove Width
G = (Do-Di)/2

agencies

WARNING:

Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the o-ring. Otherwise many bad things will happen to your design.

 

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