Seals

Question 1

With pressure sealing, gaskets are usually subject to what?

Answer 1

Compression and Internal Pressure

Question 2

What two types of O-rings are there?

Answer 2

Dynamic and Static

Question 3

What are two main catagories of Dynamic Seals? Give examples for each.

Answer 3

• Contact: Packing, Lip, Diaphram, Mechanical Seals
• Clearance: Bushings, Annulus, Slinger, Labyrinth Seals

Question 4

Are Dynamic Seals Positive or Non-Positive?

Answer 4

Can be either.

Question 5

Is Packing Positive or Non-Positive Sealing?

Answer 5

Either

Question 6

What is Inside and Outside Packed?

Answer 6

• Inside is packing installed in the moving unit.
• Outside is packing installed in the stationary unit. Ex..Stuffing box

Question 7

What is Automatic Packing?

Name some examples.

Answer 7

• Sealing which uses system pressure to improve its sealing action.
• U-ring, V-ring, O-ring, Cup packing

Question 8

Is Cup Packing Balanced or Unbalanced?

Answer 8

Unbalanced as it has one lip and seals only one diameter

Question 9

A balanced seal is what?

Answer 9

A seal the seals on two diameters.

Question 10

A Cup packing is usually found as a what?

Answer 10

Piston Seal

Question 11

What is the purpose of a rod wiper?

Answer 11

Wipe off contaminants during the retract stroke.

Question 12

A Lip Seal will only withstand a maximum pressure of about what?

Answer 12

5 PSIG

Question 13

The width of standard O-ring grooves are usually machined out to what % of O-ring cross sectional diameter.

Answer 13

40% greater than the O-ring cross sectional diameter.

Question 14

What type of Gasket is this?

Answer 14

Flat

Question 15

What type of Gasket is this?

Answer 15

V - U-Shaped

Question 16

What type of Gasket is this?

Answer 16

Spiral-wound

Question 17

What type of Gasket is this?

Answer 17

Corrugated or Embossed

Question 18

What type of Gasket is this?

Answer 18

Jacketed with filler material core

Question 19

What type of Gasket is this?

Answer 19

Flexi-metallic has a metallic inner ring and non-metallic outer ring.

Question 20

What is 1 miro-inch in microns?

Answer 20

1 micro-inch = 0.0254 microns

Question 21

What is this?

Label it.

Answer 21

Lip Seal

Question 22

What type of seal is this?

Answer 22

Lip Seal, Inclusion Position

Question 23

What type of seal is this?

Answer 23

Lip Seal, Exclusion Position

Question 24

What type of seal is this?

Answer 24

Double Lip Seal

Question 25

What is this?

Answer 25

Annulus Seal, Concentric Grooves

Question 26

What is this?

Answer 26

Annulus Seal, Helical Gooves

Question 27

What is this?

Answer 27

Slinger Seal

Question 28

What is this?

Answer 28

Labyrinth Seal

Question 29

What is this?

Answer 29

Flat Diaphragm Seal

Question 30

What is this?

Answer 30

Rolling Diaphragm Seal

Question 31

What is this?

Label it.

Answer 31

Mechanical Seal

Question 32

What is this?

Answer 32

Annulus Seal, Concentric

Question 33

What is this?

Answer 33

Annulus Seal, Helical

Question 34

What is this?

Answer 34

Slinger Seal

Question 35

Answer.

Answer 35

B)

Question 36

Answer

Answer 36

B)

Question 37

Answer

Answer 37

C)

Question 38

Answer

Answer 38

C)

Question 39

Answer

Answer 39

D)

Question 40

Answer

Answer 40

C)

Question 41

Answer

Answer 41

B)

Question 42

Answer

Answer 42

C)

Question 43

Answer

Answer 43

C)

Question 44

Answer

Answer 44

C)

Question 45

Answer

Answer 45

C)

Question 46

Answer

Answer 46

B)

Question 47

Answer

Answer 47

C)

Question 48

Answer

Answer 48

B)

Question 49

Answer

Answer 49

D)

Question 50

Answer

Answer 50

C)

Question 51

Answer

Answer 51

C)

Question 52

Answer

Answer 52

C)

Question 53

Answer

Answer 53

D)

Question 54

Answer

Answer 54

D)

Question 55

Answer

Answer 55

C)

Question 56

Answer

Answer 56

A)

Question 57

Answer

Answer 57

C)