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Pack of ten black Buna-N O-rings dash 129

Zoro Select

Zoro Select Internally Lubricated Buna-N O-Ring Dash 129 PK10

SKU CH-CMWW-KKD01

Pack of ten Buna-N O-rings with Dash 129 sizing and internal lubrication for easier installation

  • Buna-N material resists oils and fuels
  • Internally lubricated for easier installation and longer seal life
  • Dash 129 size fits 1.5 in. ID and .103 in. cross-section
  • Pack of 10 covers multiple repair jobs
  • Temperature range -30 to 250 °F suits varied environments

Internally Lubricated Buna-N O-Ring Pack

This pack contains ten black Buna-N O-rings sized to Dash 129 for sealing static and dynamic joints. Each ring has a 1.5 in inside diameter, 0.103 in cross-section and 1.755 in outside diameter. The material is rated to 70A durometer and operates from -30 to 250 degrees F. They are metal detectable but not X-ray detectable and are not FDA compliant.

Simple Press-Fit Installation

Installation is a straight press-fit into a matching groove; the internal lubrication reduces insertion force and helps prevent cutting the seal. The most common issue is stretching the ring over sharp threads or burrs, which creates a leak path. Clean the groove thoroughly and use a compatible assembly grease if the housing has tight lead-in chamfers.

Steady-State Sealing Performance

Under continuous pressure and temperature cycling the 70A Buna-N compound maintains its compression set resistance within the stated range. The internal lubricant remains distributed through the bulk material, so friction and wear stay consistent during long dwell periods. Metal detectability is unchanged after extended exposure to the rated temperature limits.

Highlights

  • Buna-N material resists oils and fuels
  • Internally lubricated for easier installation and longer seal life
  • Dash 129 size fits 1.5 in. ID and .103 in. cross-section
  • Pack of 10 covers multiple repair jobs
  • Temperature range -30 to 250 °F suits varied environments

Specifications

BrandZORO SELECT

Questions about this item

How can I verify the O-ring is working correctly after installation?

Check that the seal holds pressure without leaks and the material stays intact within the -30 to 250 degrees F temperature range.

What is included in the pack and what must be purchased separately?

The pack contains 10 Buna-N O-rings, dash 129, with 1.5 in actual inside diameter and .103 in actual width; lubricant and installation tools are not included.

Which dash number and durometer should I select for my application?

Choose dash 129 with 70A durometer when you need a 1.755 in actual outside diameter and medium-hard Buna-N material rated for -30 to 250 degrees F.

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