Seal Dimensions 4

5/8″ (.625″) SHAFT (continued)

AS&P

Seal Products

What is the best rubber for a mechanical seal?

The product we all refer to as rubber, takes many different forms. Originally rubber came from a tree, most rubber or “Elastomers” these days are man-made. The most common elastomer (rubber) used on a mechanical seal is Nitrile (also called Buna-N). The reason is simple, Nitrile is compatible with both water and oil.  But Nitrile has it’s limitations.  As fuels gained additives, the additives attacked the seals in your car, so most automotive fuel systems are FKM or Viton.  The key is to use an elastomer in your mechanical seal that is compatible with the fluid being pumped.  Neoprene does well in cold applications. Viton (FKM) does well in applications over 300 F – 500 F. Consult your American Seal  & Packing representative for specific recommendations.

American Seal & Packing – DIMENSIONAL CROSS REFERENCE BY SHAFT SIZE

5/8″ (.625″) SHAFT (continued)

single spring mechanical seal dimensions 4

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

Mechanical Seals

AS&P Mechanical Seal information sites

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