Pacific Seals Catalogues

Click on each catalogue to view and download.

We have pain-stakingly crafted our range of O-Rings, Wipers and Piston seals into catalogues. These catalgoues outline our range and allow you to make confident decisions about the type of seal you're needing in your application.

Pacific Seals are proud to bring you our exclusive range of Hy-Max O-rings and back up rings. Every single Hy-Max O-ring undergoes 100% Quality Control checking to ensure you only receive the highest quality product.

Hydraulic cylinders operate in a variety of applications and environmental conditions, including exposure to dust, debris or outside weather conditions.

To prevent these contaminants from entering the cylinder assembly and hydraulic system, wiper seals (also known as scrapers, excluders or dust seals) are fitted on the external side of the cylinder head. Wiper seals maintain sealing contact to the piston rod when the equipment is both stationary and in use. Thishelps to make sure foreign contaminants can not enter the cylinder when the piston is retracting.

Piston Seals or Piston Rings are used in hydraulic cylinders for fluid sealing and are designed to ensure that pressurised fluid does not leak across the cylinder head as the system pressure pushes the piston down the cylinder bore.

The choice of piston seal is decided by the way in which the cylinder operates. For a cylinder which is exclusively single-acting, capable of sealing dynamic pressure from one side (unidirectional), it is always best to choose the type of seal designed to provide optimum sealing qualities for single-acting functions.

Double acting cylinders are the most widely used cylinder types. They operate via pressure acting on both sides of the piston, and therefore require double-acting seal arrangements. Double acting piston seals have a symmetrical profile and identical sealing functions in both directions. Typically, double-acting piston seals consist of a sealing ring and an energizer. The deformation of the elastomeric energizer when installed provides adequate force to keep the sealing ring in dynamic sealing contact with the cylinder bore, while itself sealing statically against the seal housing groove.

Find the right seal with our easy to use Imperial O-Ring chart.

Pacific Seals is New Zealand's exclusive master Hallite distributor

Hallite Seals International is an ISO 9001 accredited leading manufacturer.

  • fluid power hydraulic and pneumatic seals
  • wiper seals
  • o-rings
  • rod and piston seals,
  • bearings
  • other custom high-performance parts

They operate worldwide in conjunction with major international companies, and are renowned for their commitment to engineering excellence.

For over 100 years Hallite has been at the cutting edge of fluid power technology, manufacturing a wide range of rod/gland, piston, and static seals, as well as support and bearing components, for technically challenging applications. Their proprietary materials are class leading and they also utilise a wide range of more common materials including Polytetrafluoroethylene (PTFE), Polyurethane (EU), nitrile rubbers (NBR) and Fluoro-elastomers (FKM).


Hy-Max is Pacific Seals exclusive brand of high performance O-Rings, x-rings, DIN seals, bonded washers, spiral hose guard, gland packing, industrial hand wipes, cable ties and many other industrial products.

We source from only the highest quality manufacturers across the world, from Taiwan to Austria. We perform our own in-house testing of any new products to confirm they meet our strict quality and reliability standards.

We are always adding new products to the Hy-Max range, so if you are struggling to source other quality industrial product, don’t hesitate to call us, we should be able to help!

In-house custom seal maker

Forma is our integrated on-demand design and manufacture service, allowing us the flexibility to deliver custom seals for your time critical projects. The dedicated Forma team has over half a century of combined experience in hydraulic seal engineering. With over 300 materials and sizes in stock, Forma is able to immediately get started on manufacturing virtually any seal to your exact requirements.

A state of the art CAD/CAM system from Seal-Maker® International is the backbone of this service, and has been a trusted name in custom seal manufacturing since 1997. Seal-Maker® also produce their own materials allowing Forma to offer the most diverse range of materials in New Zealand. The team are able to work to your dimensions, or if you can bring in the components of your system, they can accurately measure, design, and even manufacture your components while you wait.

Contact Us

  • Wellington: 35 Victoria Street, Petone, Lower Hutt 5012
  • Christchurch: 50 Columbia Avenue, Hornby, Christchurch 8042
  • Phone: 0800 822 722 / 04 566 3180

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