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Fifty green HNBR O-rings 12.4 mm inner diameter 1.8 mm cross section

SUR&R Auto Parts

SUR&R Auto Parts HOR510 O-Ring 12.4 mm 1.8 mm HNBR Green PK50

SKU CH-51D6-E1ZVN

Pack of 50 green HNBR O-rings sized 12.4 mm inside diameter by 1.8 mm cross-section for metric fluid sealing

  • HNBR material handles -15 °F to 100 °F
  • 4 mm inner diameter fits standard ports
  • 8 mm cross-section seals high-pressure lines
  • Green colour allows quick visual identification
  • Pack of 50 covers multiple service jobs

Precision sealing kit

The SUR&R Auto Parts HOR510 pack supplies fifty green HNBR O-rings built for metric fluid systems. Each ring has a nominal inside diameter of 12.4 mm and a cross-section width of 1.8 mm. The material carries a 70A durometer rating and meets ASTM D2000 and SAE J200 specifications. Mechanics and DIYers use them to refresh seals in brake, fuel and hydraulic circuits.

Straightforward press-in fitting

Installation is a simple press into the gland; no special tools are required beyond a pick for removal. The rings are not metal-detectable and not X-ray-detectable, so they cannot be located by those inspection methods. Lubricate with compatible fluid before seating to avoid nicking the 1.7 mm actual width during assembly.

Temperature and fluid limits

The nitrile compound handles a continuous range of -15 to 100 degrees Fahrenheit. Outside that window the material hardens or softens, risking leak paths. The green colour identifies the HNBR grade but does not indicate chemical compatibility; verify fluid resistance against the specific media before committing to a critical joint.

Highlights

  • HNBR material handles -15 °F to 100 °F
  • 4 mm inner diameter fits standard ports
  • 8 mm cross-section seals high-pressure lines
  • Green colour allows quick visual identification
  • Pack of 50 covers multiple service jobs

Specifications

BrandSUR&R

Questions about this item

How can I confirm the O-rings seal correctly after installation?

Pressure-test the system and check for leaks; the HNBR material rated at 70A durometer should hold within the -15 °F to 100 °F range specified for these 12.4 mm inside-diameter rings.

What comes in the package and what must I source separately?

The pack contains 50 green HNBR O-rings measuring 12.4 mm ID by 1.8 mm nominal width (1.7 mm actual); no lubricant, installation tools or additional seals are included.

Which size variant should I select for a 12.4 mm groove?

Choose the HOR510 listing showing 12.4 mm nominal inside diameter, 1.8 mm nominal cross-section and 15.9 mm outside diameter — the only version matching those dimensions.

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