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Black NBR70 O-ring, 48 by 2.5 millimetres, circular cross-section

Alphacool

Alphacool Replacement O-Ring 48x2.5mm NBR70 Black 95069

SKU CH-99M4-D6THX

Spare 48x2.5mm NBR70 O-ring restores the inner seal on Laing DDC pumps after top replacement

  • Product typeAccessories
  • Restores pump seal with exact 48 x 2.5 mm NBR70 gasket
  • Fits Laing DDC 1T and 1 Plus pumps for direct replacement
  • Prevents leaks after top swap by replacing damaged inner O-ring
  • Durable NBR70 material resists coolant and temperature cycling
  • Ready-to-install spare keeps custom loop maintenance simple

Alphacool Pump O-Ring Replacement

This NBR70 gasket replaces the inner seal on Laing DDC 1T and 1 Plus pumps. It is intended for builders servicing liquid-cooling loops who need a direct drop-in spare. The black rubber ring restores the original sealing surface without modification.

Critical Dimension 48x2.5mm

The gasket measures 48 by 2.5 millimetres and is moulded in NBR70 material. Only this exact cross-section matches the pump housing groove; a different thickness or diameter will not seal correctly. Verify the old ring against these figures before ordering.

Ready-to-Install Spare Part

Supplied as a single replacement O-ring with no additional tools or lubricant. The part enables immediate reassembly after a top swap or routine maintenance. No software, adapters or mounting hardware are included or required.

How it compares

Measured against everything we stock in Pumps, Sprayers & Pump Accessories, at today’s prices. Recalculated every night.

Price $1.46
Cheaper than about 99% of the 962 comparable items (median $38.99).

Specifications

Product
Product typeAccessories

Questions about this item

What does the 48x2.5mm size mean for my Laing DDC pump?

The 48mm inner diameter and 2.5mm cross-section match the original inner O-ring groove on Laing DDC 1T and 1 Plus pumps, sealing the top-to-body joint.

Which pump models does this NBR70 gasket fit?

It is made for Laing DDC 1T and 1 Plus pumps, replacing the inner O-ring that can be damaged when swapping the pump top.

How do I install the 48mm O-ring on the pump?

Seat the black NBR70 ring into the inner groove of the pump housing before refitting the top, ensuring it sits flat without twisting.

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