sealant

Question 1

purpose of sealant

Answer 1

prevent movement of liquid or gas from one point to another

Question 2

sealant are used to

Answer 2

maintain cabin pressure
prevent fuel leakage
prevent corrosion

Question 3

what are pliable sealants

Answer 3

one part sealants which is cured by reacting with moisture in the air

Question 4

what are drying sealant

Answer 4

set and cured by evaporation of the solvent

Question 5

amount of solvent added in drying sealants affects

Answer 5

application consistency
hardness
shrinkages

Question 6

what are curing sealants

Answer 6

2 part sealants

Question 7

sealant classes physical factors

Answer 7

class A: low viscosity
class B: higher viscosity and lower lump
class C: medium viscosity for good spread ability

Question 8

sealant classes application method

Answer 8

class A: by brush
class B: by extrusion gun or spatula
class C: suitable for fraying surface sealing

Question 9

increment of spread for fillet sealing

Answer 9

3 foot (1m)

Question 10

which method is used for fraying sealing

Answer 10

rolling/spraying

Question 11

what sealant transform from fluid to semifluid state

Answer 11

curing sealants

Question 12

catalyst or hardener are added to 2 part sealants for

Answer 12

curing the base compound by chemical reaction

Question 13

definition of application life for sealant

Answer 13

length of time a mixed sealant remains usable for application

Question 14

excess sealant can be removed by wooden spatula after

Answer 14

curing time of sealant

Question 15

tools for removal of sealant

Answer 15

plastic scrapper or non-metallic spatula

Question 16

do not apply sealant when temp is below (__ F) (__ C) or above (___ F) (__C)

Answer 16

below 50 deg f (10 deg c)

above 120 deg f (48 deg c)