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Black NBR70 O-ring 34.5 x 2 mm for Alphacool GPX GPU block

Alphacool

Alphacool Replacement O-Ring 34.5 x 2mm NBR70 GPX 95085

SKU CH-TP5T-X0YYC

Replacement O-ring 34.5 x 2 mm NBR70 seals Alphacool GPX GPU water blocks

  • Product colorBlack
  • Key featuresReplacement O-Ring for Alphacool GPX GPU Block
  • Fits Alphacool GPX GPU blocks precisely
  • 5 x 2 mm size matches original spec
  • NBR70 compound resists coolant degradation
  • Black silicone seals without staining tubing
  • Single replacement ring restores leak-free operation

Alphacool GPX GPU Block O-Ring

This black silicone O-ring is a direct replacement seal for Alphacool GPX series GPU water blocks. It restores the original sealing surface when the factory ring has aged or been damaged during maintenance. The part is sold new and individually packaged.

Simple press-fit installation

The ring seats in the existing groove on the GPX block without tools. Take care to clean the channel thoroughly before fitting; residual coolant or debris is the most common cause of leaks after reassembly. Stretching the ring excessively while positioning it can create a permanent deformation that compromises the seal.

Sized for GPX groove only

The 34.5 mm by 2 mm cross-section matches the specific gland dimensions of the Alphacool GPX GPU block. It will not seal correctly in fittings, reservoirs or blocks from other series that use different groove widths or diameters. The NBR70 material is rated for typical liquid-cooling temperatures and coolant chemistries.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $0.78
Cheaper than about 99% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Brand nameAlphacool
Model name95085
Product colorBlack

Questions about this item

How can I confirm the 34.5 x 2mm O-ring is sealing my Alphacool GPX GPU block correctly after installation?

Fill the loop and run the pump at low speed while watching the block's acrylic top and fitting edges; no droplets or pressure drop means the NBR70 ring is seated properly.

What comes in the package and is any extra hardware needed for the replacement?

The box contains one black 34.5 x 2mm NBR70 O-ring (part 95085); no tools or additional seals are included, so reuse the existing compression fittings and screws.

Which O-ring size matches my Alphacool GPX block — 34.5 x 2mm or another dimension?

Choose the 34.5 x 2mm NBR70 ring (part 95085); it is the direct replacement specified for the GPX GPU block channel groove.

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