ASAB DDP42 Replacement Parts #5 - Sealing Pad

Part Code: ASAB-SDDP42-5

Introducing the ASAB DDP42 Sealing Pad — a key sealing/support component used in ASAB DDP42 double diaphragm pump assemblies to help maintain consistent sealing pressure and protect mating surfaces during operation. Sitting within the diaphragm/plate stack (application depends on configuration), the sealing pad helps ensure the pump clamps up evenly, reducing the chance of weeping and improving long-term reliability under vibration and continuous cycling.

A sealing pad that’s flattened, torn, hardened, chemically attacked, or deformed can lead to the usual headaches: persistent seepage at joints, prime instability, inconsistent output, or repeat seal failures because the stack can’t hold uniform compression. Replacing the pad during rebuilds is smart practice — it’s a relatively small part that can save you a whole lot of “why is it still leaking?” later.

Whether you’re doing a wet-end service, replacing diaphragms, or refreshing wear parts during preventative maintenance, the ASAB-SDDP42-5 is the right part to keep your DDP42 sealing properly and running smooth.

Key Benefits

• Direct replacement sealing pad for ASAB DDP42

• Supports consistent sealing compression across the diaphragm/plate stack

• Helps prevent weeping and bypassing at critical sealing interfaces

• Ideal to replace during diaphragm changes / wet-end rebuilds

• Correct fix for pads that are flattened, torn, hardened, or chemically damaged

• Helps reduce repeat failures caused by uneven clamp load

• Workshop-ready spare for fast turnaround repairs

What’s Included

• DDP42 Sealing Pad — ASAB-SDDP42-5

Safety Check

• Isolate and depressurise first: Shut off air supply, bleed the airline fully, and confirm the pump is not pressurised before disassembly.

• Chemical exposure: Wear gloves and eye protection — residual product can remain trapped in the chambers.

• Keep parts in order: Note stack orientation during strip-down so the pad seats correctly on reassembly.

• Clean sealing faces: Dirt, old gasket material, or scoring will cause leaks even with a new pad.

• Even tightening: Reassemble using a cross-pattern and correct torque to avoid pinching the pad or warping plates.

• Test gradually: Bring air pressure up slowly and check for leaks before returning to full operating conditions.

ASAB – Engineered for Performance, Built to Last.