Selection guidelines

With the information below and using our selection charts, the type and number of spacer elements required for each ring and how far they will be spaced can be determined.

The selection of spacer type depends on the following dimensions:

Simplified Spacer Selection

  Carrier Pipe O.D. Recommended Solution
Small Up to 177 mm or 7 inches S/T or C/D/I
  Up to 304 mm or 12 inches A/B
Medium Up to 508 mm or 20 inches F/G
  Up to 838 mm or 33 inches M/N or P/Q
Large Up to 1270 mm or 50 inches L
  Up to 3810 mm or 150 inches E/H