Level 1 - Mechanical Seals Quiz #3

10 Questions | Total Attempts: 115

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Level 1 - Mechanical Seals Quiz #3

Seals Quiz 3


Questions and Answers
  • 1. 
    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

  • 2. 
    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

  • 3. 
    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

  • 4. 
    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

  • 5. 
    What is the US suggested list price and item number for a 255 -17 SA SSC/CB/SSC/CB 316SS FKM?
    • A. 

      3387.00 690255

    • B. 

      2866.00 666018

    • C. 

      2891.00 666020

    • D. 

      4909.00 680000

  • 6. 
    What is the minimum pressure requirement when providing barrier fluid?
    • A. 

      1-2 Psi above stuffing box pressure

    • B. 

      7-8 Psi above atmospheric pressure

    • C. 

      20 - 30 Psi (Or 2 BAR above stuffing box pressure)

    • D. 

      1-2 Psi lower than stuffing box pressure

  • 7. 
    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

  • 8. 
    The least expensive Chesterton dual mechanical seal is the 250.
    • A. 

      True

    • B. 

      False

  • 9. 
    Which seal models use monolithic seal faces? (Note: Answer can be multiple choices)
    • A. 

      280

    • B. 

      255

    • C. 

      S20

    • D. 

      250

  • 10. 
    The key feature of the 280 versus the 255 mechanical is the
    • A. 

      Monolithic seal faces

    • B. 

      Slotted gland

    • C. 

      Direct centering clips

    • D. 

      Motion capability

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