STYLE HRU RUBBER U-SEALS

 

     
SEAL INFORMATION
MATERIAL 80A BUNA-N RUBBER
90A FLUOROCARBON
TEMPERATURE RANGE BUNA-N: -40° to +250° F
FC: -20° to +400° F
PRESSURE RANGE BUNA-N: 0 to 1,250 PSI
FC: 0 to 2,000 PSI
SPEED 3 FT/SEC
PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height)


Style HRU u-seals are precision molded from 80 Durometer Buna-N rubber. Sizes include those found in Army-Navy sepc. AN6226 and narrow cross-section sizes found in J.I.C. cylinders and are sometimes popularly termed 'Huva Cup'.  This style can also be supplied in various materials including: H-NBR, X-NBR, Hytrel and others.  Call for more information.

Part #

Cross Section

A - Nom. I.D.

B - Nom. O.D.

C - Nom. Height

D - Groove Width

E - Rod Diameter

F - Throat Diameter

G - Housing Diameter

H - Groove Diameter

I - Piston Diameter

J - Bore Diameter

D1 – Groove Width with Backup

List
Price

HRU21-2.75-21

7/32

2-3/4

3-3/16

7/32

.250

2.750

2.751

3.188

2.750

3.185

3.188

.312

$5.27

HRU21-2.81-21

7/32

2-13/16

3-1/4

7/32

.250

2.812

2.813

3.250

2.812

3.248

3.250

.312

$5.53

HRU21-2.81-21V

7/32

2-13/16

3-1/4

7/32

.250

2.812

2.813

3.250

2.812

3.248

3.250

.312

$25.14

HRU21-3.00-21

7/32

3

3-7/16

7/32

.250

3.000

3.001

3.438

3.000

3.435

3.438

.312

$6.76

HRU21-3.00-21V

7/32

3

3-7/16

7/32

.250

3.000

3.001

3.438

3.000

3.435

3.438

.312

$27.04

HRU21-3.06-21

7/32

3-1/16

3-1/2

7/32

.250

3.062

3.063

3.500

3.062

3.498

3.500

.312

$7.74

HRU21-3.31-21

7/32

3-5/16

3-3/4

7/32

.250

3.312

3.313

3.750

3.312

3.748

3.750

.312

$8.52

HRU25-1.37-25

1/4

1-3/8

1-7/8

1/4

.281

1.375

1.376

1.875

1.375

1.873

1.875

.344

$4.56

HRU25-1.75-25

1/4

1-3/4

2-1/4

1/4

.281

1.750

1.751

2.250

1.750

2.248

2.250

.344

$4.78

HRU25-2.00-25

1/4

2

2-1/2

1/4

.281

2.000

2.001

2.500

2.000

2.498

2.500

.344

$5.27

HRU25-2.50-25

1/4

2-1/2

3

1/4

.281

2.500

2.501

3.000

2.500

2.998

3.000

.344

$5.55

HRU25-2.75-25

1/4

2-3/4

3-1/4

1/4

.281

2.750

2.751

3.250

2.750

3.248

3.250

.344

$5.84

HRU25-2.75-25V

1/4

2-3/4

3-1/4

1/4

.281

2.750

2.751

3.250

2.750

3.248

3.250

.344

$28.92

HRU25-3.50-25

1/4

3-1/2

4

1/4

.281

3.500

3.501

4.000

3.500

3.998

4.000

.344

$5.78

HRU25-3.50-25V

1/4

3-1/2

4

1/4

.281

3.500

3.501

4.000

3.500

3.998

4.000

.344

$27.57

HRU25-3.75-25

1/4

3-3/4

4-1/4

1/4

.281

3.750

3.751

4.250

3.750

4.248

4.250

.344

$6.08

HRU25-4.00-25

1/4

4

4-1/2

1/4

.281

4.000

4.001

4.500

4.000

4.498

4.500

.344

$6.26

HRU25-4.00-25-90D

1/4

4

4-1/2

1/4

.281

4.000

4.001

4.500

4.000

4.498

4.500

.344

$6.26

HRU25-4.00-25V

1/4

4

4-1/2

1/4

.281

4.000

4.001

4.500

4.000

4.498

4.500

.344

$34.55

HRU25-4.50-25

1/4

4-1/2

5

1/4

.281

4.500

4.501

5.000

4.500

4.998

5.000

.344

$6.90

HRU25-4.50-25V

1/4

4-1/2

5

1/4

.281

4.500

4.501

5.000

4.500

4.998

5.000

.344

$38.93

HRU25-4.75-25

1/4

4-3/4

5-1/4

1/4

.281

4.750

4.751

5.250

4.750

5.248

5.250

.344

$12.28

HRU25-5.50-25

1/4

5-1/2

6

1/4

.281

5.500

5.501

6.000

5.500

5.998

6.000

.344

$13.17

HRU25-5.50-25V

1/4

5-1/2

6

1/4

.281

5.500

5.501

6.000

5.500

5.998

6.000

.344

$89.52

HRU25-5.50-37

1/4

5-1/2

6

3/8

.406

5.500

5.501

6.000

5.500

5.998

6.000

.469

$13.17

HRU28-4.43-28

9/32

4-7/16

5

9/32

.312

4.437

4.438

5.000

4.437

4.998

5.000

.375

$12.46

HRU28-4.43-28V

9/32

4-7/16

5

9/32

.312

4.437

4.438

5.000

4.437

4.998

5.000

.375

$40.29

HRU28-4.56-28

9/32

4-9/16

5-1/8

9/32

.312

4.562

4.563

5.125

4.562

5.123

5.125

.375

$29.15

HRU28-5.00-28

9/32

5

5-9/16

9/32

.312

5.000

5.001

5.563

5.000

5.560

5.563

.375

$24.14

HRU28-5.00-28V

9/32

5

5-9/16

9/32

.312

5.000

5.001

5.563

5.000

5.560

5.563

.375

$44.68

HRU28-5.43-28

9/32

5-7/16

6

9/32

.312

5.437

5.438

6.000

5.437

5.998

6.000

.375

$14.29

HRU28-5.43-28V

9/32

5-7/16

6

9/32

.312

5.437

5.438

6.000

5.437

5.998

6.000

.375

$48.96

HRU28-6.43-28

9/32

6-7/16

7

9/32

.312

6.437

6.438

7.000

6.437

6.998

7.000

.375

$9.64

HRU31-2.87-31

5/16

2-7/8

3-1/2

5/16

.344

2.875

2.876

3.500

2.875

3.498

3.500

.406

$9.46

HRU31-4.37-31

5/16

4-3/8

5

5/16

.344

4.375

4.376

5.000

4.375

4.998

5.000

.406

$8.65

HRU31-5.37-31

5/16

5-3/8

6

5/16

.344

5.375

5.376

6.000

5.375

5.998

6.000

.406

$12.97

HRU31-5.37-31V

5/16

5-3/8

6

5/16

.344

5.375

5.376

6.000

5.375

5.998

6.000

.406

$56.18

HRU31-5.50-31

5/16

5-1/2

6-1/8

5/16

.344

5.500

5.501

6.125

5.500

6.123

6.125

.406

$17.04

HRU31-5.50-31V

5/16

5-1/2

6-1/8

5/16

.344

5.500

5.501

6.125

5.500

6.123

6.125

.406

$73.82

HRU31-6.37-31

5/16

6-3/8

7

5/16

.344

6.375

6.376

7.000

6.375

6.998

7.000

.406

$20.51

HRU31-6.37-31V

5/16

6-3/8

7

5/16

.344

6.375

6.376

7.000

6.375

6.998

7.000

.406

$77.86

HRU31-7.37-31

5/16

7-3/8

8

5/16

.344

7.375

7.376

8.000

7.375

7.998

8.000

.406

$25.40

HRU31-7.37-31V

5/16

7-3/8

8

5/16

.344

7.375

7.376

8.000

7.375

7.998

8.000

.406

$119.36

HRU34-9.31-34

11/32

9-5/16

10

11/32

.375

9.312

9.314

10.000

9.312

9.998

10.000

.438

$34.84

HRU34-9.31-34V

11/32

9-5/16

10

11/32

.375

9.312

9.314

10.000

9.312

9.998

10.000

.438

$151.53

HRU37-11.25-37

3/8

11-1/4

12

3/8

.406

11.250

11.252

12.000

11.250

11.998

12.000

.469

$60.22

HRU37-2.50-37

3/8

2-1/2

3-1/4

3/8

.406

2.500

2.501

3.250

2.500

3.248

3.250

.469

$6.22

HRU37-2.75-37

3/8

2-3/4

3-1/2

3/8

.406

2.750

2.751

3.500

2.750

3.498

3.500

.469

$6.51

HRU37-9.25-37

3/8

9-1/4

10

3/8

.406

9.250

9.252

10.000

9.250

9.998

10.000

.469

$35.46

HRU40-13.18-40

12/32

13-3/16

14

13/32

.438

13.187

13.189

14.000

13.187

13.998

14.000

.500

$44.97

HRU50-11.00-50

1/2

11

12

1/2

.531

11.000

11.002

12.000

11.000

11.998

12.000

.594

$75.94

HRU50-9.00-50

1/2

9

10

1/2

.531

9.000

9.002

10.000

9.000

9.998

10.000

.594

$58.09

 

 

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