Started in 2010, Shamrock Seals is a manufacturer of custom rotary and hydraulic seals.  Our products are made from high-performance elastomers and engineering plastic material in sizes up to 30.0″.  We have produced the following types of seals over the years: rotary, oil and grease, bearing, dust, medium compliant, vacuum, v-seals, high pressure, split and labyrinth seals.  Hydraulic and pneumatic seals include rod, piston, symmetrical u-cups, buffer, wiper, excluder, back-up, wear ring, static and spring energized seals.  In addition to the standard profiles listed under products on this website, we can manufacture custom profiles as long as we have a print and or/sample.  Our online quoting capability minimizes the time reqiure to produce and ship your seals.  We are committed to providing quality products, excellent customer service, and on-time delivery.

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  • Symmetrical, single acting piston/rod seal, combined with pressure ring and support ring.
  • By adjusting the number of packings friction and leakage characteristics can be influenced.
  • Excellent static and dynamic sealing performance.
  • Excellent performance in high pressure conditions.
  • Useable for short and long stroke lengths.
  • High wear resistance.


Reciprocating pistons/rods in hydraulic cylinders, plungers etc.

Used in heavy duty applications (presses) with return stroke by equipment weight. Max. pressure 500 bar, max. speed 0.5 m/s.


Installation normally in open housings.

At closed housings the parts need to be split. In this case the seal must be done  slightly larger (approx. 1% in diameter)