Seal Dimensions 23

2-1/4″ (2.25″) SHAFT (continued) to 2-1/2″

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Seal Products

If a seal spring is too long, how far can I compress it?

Most single spring seals are designed to have a 50% compression rate. So if the spring has to be compressed more to fit inside your pump will it work? In our experience, the answer is a qualified yes.  Over compressing the spring will create an increased force on the seal face resulting in premature failure.  It’s a question of degrees as to if that is a problem.  A  water pump seal can often run for 20 years, so if a 50% reduction in life to 10 years is a judgment call that only can be made by the pump owner.

American Seal & Packing – DIMENSIONAL CROSS REFERENCE BY SHAFT SIZE

2-1/4″ (2.25″) SHAFT (continued) to 2-1/2″

single spring mechanical seal dimensions 23

Mechanical seal dimensions

Seal Material Codes

Notes:

  1. Mounts on shaft
  2. Tappered spring
  3. EPR should not be used with Petroleum based products
  4. With cup mount seat
  5. Lock collar sold seperately
  6. Seat is slotted
  7. Spring holder not included

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