Parbaks 14mm

The 14 mm Parbaks seal (backup ring + O-ring) is a sealing set used in high-pressure pressure-washer circuits where reliable sealing is required under variable load and high operating pressures. The set consists of an O-ring and a backup ring. The backup ring stabilizes the seal in its gland and reduces the risk of extrusion/deformation under load.

MPN / reference: 141231
diameter: 14 mm

APPLICATION

Parbaks-type sealing is used in typical service work such as:

• fixing leaks in the pump’s hydraulic section,
• rebuilding components where a standard O-ring operates under severe pressure conditions,
• servicing sealing seats and connections in the water circuit,
• inspections and overhauls of units used intensively (workshop/service/industrial use).

SYMPTOMS - WHEN TO REPLACE

Replacement is recommended when you observe:

• water leaks around the seal seat or housing connections,
• loss of tightness after disassembly/reassembly using old elements,
• flattened O-ring, cracks, or loss of elasticity,
• signs of seal extrusion/deformation under load,
• unstable system operation caused by micro-leaks.

HOW TO CHOOSE THE RIGHT PART

Selection must be precise-both diameter and gland fit matter:

• confirm nominal diameter Ø10 mm and the seal type (O-ring + backup ring),
• select by manufacturer number: MPN 141231,
• compare with the removed parts: O-ring cross-section, backup ring profile, and how it seats.

In high-pressure systems, even small dimensional differences can cause leaks or rapid wear.

COMPATIBILITY

Choose the seal based on MPN 141231 and Ø10 mm. Indicated applications (e.g., HD series, 1050, Quickly, 1152) should be treated as a usage area that must be confirmed in the parts list for the specific pump/unit, because different gland variants can exist within the same series.

[faq]

Why is there a backup ring in the set if there is also an O-ring?|The backup ring supports and stabilizes the O-ring in the gland and reduces extrusion under high pressure, improving durability and sealing.

Does the backup ring have a specific installation orientation?|In many designs it matters. Safest is to replicate the orientation from disassembly or follow the service procedure for the specific assembly.

Can I replace only the O-ring and keep the old backup ring?|Sometimes possible, but in high-pressure repairs it’s typically best to replace the complete set-an aged backup ring can shorten the life of the new O-ring.

How can I be sure I need the 14 mm version?|Safest is identification by MPN 141231 and comparison with the removed seal (diameter and profile).

What most often causes fast wear of this type of seal?|Most commonly: contaminants in the water, a worn gland, incorrect installation (twisted O-ring), harsh operating conditions, and reusing old sealing elements.

[/faq]