Oz Seals super polymer PK56 and PK58 hydraulic piston seals

An enduring example of a classic seal design for harsh conditions, where shock loads and pressure spikes present an issue, is the PK56 profile (or PK58 with bearing/backup rings).

Oz Seals supplies the robust PK56 and PK58 hydraulic piston seals in super polymer rather than the traditional rubber and fabric combination, which can delaminate. The super polymer makes it a long-lasting, wear-resistant seal for a wide variety of hydraulic cylinder applications. The efficiency of the heavy-duty seal benefits from the low friction provided by the triple-lubricated properties in Oz Super Polymer. It also has high tensile strength and can be used in closed pistons.

The PK56 and PK58 come in a wide range of sizes, or custom sizes can also be machined upon request. Under harsh conditions, the PK56 piston seal design is an effective and contamination-tolerant solution to hydraulic sealing.