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The short answer is no for percussion seals and sometimes for standard-position O-rings — and the reason for the percussion incompatibility is bore geometry, not just bore diameter. Atlas Copco RD-series percussion bores use a specific groove width-to-depth ratio that determines the compression ratio for PU lip seals. Sandvik DD-series grooves use different ratios reflecting different percussion bore design philosophy. A lip seal dimensioned for an RD22U groove will generate 8–12% different contact pressure in a DD2710 groove of nominally similar bore diameter — not because the seal is wrong, but because the groove proportions differ.
The positions where cross-compatibility genuinely exists: hydraulic port face seals (O-rings at manifold connections) that use BSP or SAE standard port face dimensions, and rotation circuit port O-rings where both manufacturers use ISO 3601-standard O-ring cross-sections. These positions can be cross-referenced by OD, ID, and cross-section measurement with reliable results. For the percussion circuit — piston seal, guide sleeve seals, rod seal — treat each brand as a separate incompatible system and maintain separate kit inventories. The 15-minute time saving from combining inventories creates a 14-hour teardown risk when the wrong kit gets pulled in an emergency.
Atlas Copco vs Sandvik Seal Compatibility by Position
|
Seal Position |
Atlas Copco RD-series |
Sandvik DD/DT-series |
Cross-Compatible? |
|
Percussion bore piston seal |
RD-specific groove geometry — model by model |
DD/DT-specific groove geometry — model by model |
No — groove proportions differ; use dedicated kits only |
|
Guide sleeve O-rings |
Model-specific ID and cross-section |
Model-specific ID and cross-section — different from AC |
No — cross-section nominally similar but ID differs |
|
Hydraulic port face O-rings (BSP fittings) |
ISO 3601 standard cross-sections at BSP port faces |
ISO 3601 standard cross-sections at BSP port faces |
Yes — measure and confirm; standard ISO substitution acceptable |
|
Rotation motor port seals |
ISO 3601 at standard SAE port faces |
ISO 3601 at standard SAE port faces |
Partially — confirm port face standard; SAE and BSP are not the same |
|
Accumulator diaphragm |
Model and generation specific — do not substitute |
Model and generation specific — do not substitute |
No — pre-charge pressure and volume are different between platforms |
Maintaining combined AC/Sandvik kit inventories reduces SKU count but creates pull-the-wrong-one risk during shift-change emergencies when speed matters most. The 20% SKU reduction is not worth a 14-hour emergency repair on the wrong seal. HOVOO supplies separate AC and Sandvik percussion seal kits with model-coded packaging to prevent emergency kit confusion. Full model references at hovooseal.com.
