Pitch diameter is the distance from: A. The tip of a tooth to ...

[justinmsk]

Pitch diameter is the distance from:
 
  A. The tip of a tooth to the tip of the tooth on the opposite side.
  B. The base of a tooth, where it meets the wheel, to the base of the tooth on the
  opposite side. C. The approximate center of a tooth to the approximate center of the tooth on the
  opposite side. D. The tip of a tooth to the tip of an adjacent tooth.

Question 2

The O-ring is considered to be the most common __________ ______ seal.
 
  Fill in the blank(s) with correct word

[C.mcnichol98]

Answer to Question 1

C

Answer to Question 2

elastomeric static seal