Level 1 Mechanical Seal Final Exam

61 Questions | Total Attempts: 80

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Level 1 Mechanical Seal Final Exam

Questions and Answers
  • 1. 
    What is a main difference between a 440 Rotary and 891 Rotary Unit?
    • A. 

      High Temperature versus Low Temperature

    • B. 

      Fits DIN 24960 versus ANSI Pumps

    • C. 

      Non-Metallic versus Metal in Sealed Fluid

    • D. 

      Cheap versus Expensive

  • 2. 
    What is the least expensive rotary unit  of those listed below?
    • A. 

      891

    • B. 

      440

    • C. 

      886HT

    • D. 

      491

  • 3. 
    What stationary can be used in a the seal chamber shown below with an 891 rotary unit if we do not know the dimensions of the bore?
    • A. 

      773

    • B. 

      782

    • C. 

      725

    • D. 

      732

  • 4. 
    What is the most expensive component rotary with a carbon seal listed below?
    • A. 

      891

    • B. 

      440

    • C. 

      886HT

    • D. 

      491

  • 5. 
    Which rotary unit of those listed below has the highest pressure limit?
    • A. 

      440

    • B. 

      886HT

    • C. 

      891

    • D. 

      491

  • 6. 
    Which rotary unit is designed to fit the ISO En12756 L1K pump dimensions?
    • A. 

      491

    • B. 

      891

    • C. 

      440

    • D. 

      886HT

  • 7. 
    The 891 can only be used with the 714 and 777 stationary units.
    • A. 

      True

    • B. 

      False

  • 8. 
    What is a main differences between a 180 and S10 Single Cartridge Seal?
    • A. 

      Stationary versus Rotary Seal

    • B. 

      Multiport versus Single Port Flush

    • C. 

      Cassette versus Cartridge

    • D. 

      Monolithic versus Composite Seal Face

  • 9. 
    What is a main difference between the 155 and the 150 Seal?
    • A. 

      Single seal versus a dual seal

    • B. 

      Split seal versus a cassette seal

    • C. 

      Flush Quench and Drain versus Flush only

    • D. 

      Rotary versus Stationary

  • 10. 
    If L1 = 2.000 inches, L2 = 3.000 Inches, L3 = 2.250 inches, D1 = 1.500 Inches, D2 =1.875 Inches, D3 = 2.875 inches, D5 = .375 inches, D4 = 4.500 inches will a S10 fit this seal chamber? Note D dimensions are shown as a radius, but are expressed as diameters.
    • A. 

      Yes

    • B. 

      No

  • 11. 
    Which seal model offers a cassette which can be replaced to repair the seal?
    • A. 

      180

    • B. 

      155

    • C. 

      S10

    • D. 

      150

  • 12. 
    Which seal model below is defined as a rotary seal?
    • A. 

      180

    • B. 

      155

    • C. 

      S10

    • D. 

      150

  • 13. 
    Which seal model below offers an adjustable gland?
    • A. 

      180

    • B. 

      155

    • C. 

      S10

    • D. 

      150

  • 14. 
    Which seal model below uses a composite seal face which is limited to 200 C/ 400 F?
    • A. 

      180

    • B. 

      155

    • C. 

      S10

    • D. 

      150

  • 15. 
    Which cartridge/cassette seal in 1.875 inch shaft size offers the lowest price when using CB/SC FKM materials?
    • A. 

      180

    • B. 

      155

    • C. 

      S10

    • D. 

      150

  • 16. 
    The 180, 155 and S10 cartridge and cassette seals are available with other metals if necessary for corrosion resistance.
    • A. 

      True

    • B. 

      False

  • 17. 
    What is the main difference between the 280 and the 255 dual cartridge mechanical seal?
    • A. 

      The 280 has a higher pressure rating

    • B. 

      The 255 is monolithic

    • C. 

      The 280 has a pumping ring

    • D. 

      The 280 uses direct centering

  • 18. 
    What is the main difference between an S20 and a 250 mechanical seal?
    • A. 

      Cassette versus Cartridge

    • B. 

      Both are tandem seals

    • C. 

      Dual seal versus split seal

    • D. 

      Two barrier fluid ports versus 8 barrier ports

  • 19. 
    If L1 = 1.000 inches, L2 = 3.000 Inches, D2 =1.875 Inches, D3 = 2.875 inches, D5 = .375 inches, D4 = 4.500 inches will a S20 fit this seal chamber? Note - D dimensions are shown as radius, but are expressed as diameter dimension.
    • A. 

      Yes

    • B. 

      No

  • 20. 
    Which is not an O-ring size used in a S20 -15 (1.875 inch) dual seal?
    • A. 

      -136

    • B. 

      -134

    • C. 

      -141

    • D. 

      -137

  • 21. 
    What is the US suggested list price and item number for a 225C 2.125 SSC/CB/SSC/CB 316SS FKM?
    • A. 

      3387.00 690255

    • B. 

      3472.00 675613

    • C. 

      7746.00 690333

    • D. 

      4909.00 680000

  • 22. 
    Which mechanical seal model can be used with a 550 Psig barrier fluid?
    • A. 

      250

    • B. 

      255

    • C. 

      280

    • D. 

      225

  • 23. 
    Which mechanical seal models are designed to allow motion?
    • A. 

      225 and S20

    • B. 

      250 and S20

    • C. 

      255 and 280

    • D. 

      S20 and S10

  • 24. 
    The least expensive Chesterton dual mechanical seal is the 250.
    • A. 

      True

    • B. 

      False

  • 25. 
    Which seal models use monolithic seal faces?
    • A. 

      280

    • B. 

      255

    • C. 

      S20

    • D. 

      250

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