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Brass replacement tube for Starrett 98-18 machinists level

Starrett

Starrett PT99433 Replacement Tube for Machinists Level 98-18

SKU CH-KG9X-X4H11

Replacement brass vial for Starrett 98-18 machinist levels restores accurate bubble readings

  • Brass construction resists corrosion for lasting accuracy
  • Direct replacement tube restores 98-18 level function
  • Fits Grainger 26Z903 and 26Z904 references
  • Impact-rated no — designed for precision not shock
  • Starrett PT99433 matches original manufacturer specifications

Starrett PT99433 Replacement Tube

The Starrett PT99433 is a brass replacement tube designed for the Starrett 98-18 machinist's level. It restores the level's functionality when the original vial is damaged or worn. This genuine component ensures the instrument maintains its intended accuracy for precision levelling tasks in machining and inspection work.

For Starrett 98-18 level owners

This tube suits technicians and machinists who specifically own the Starrett 98-18 model and need to replace a broken or leaking vial. It is not for users of other level brands, different Starrett models, or those requiring an impact-rated vial. Buyers needing a complete new level or a different sensitivity should look at alternative instruments.

Direct vial swap installation

Installation involves removing the old tube and fitting this brass replacement into the 98-18 level body. The process requires care to avoid damaging the level housing or the new vial during the swap. Incorrect seating can affect calibration, so the level should be verified against a known reference surface after the tube is fitted.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $189.99
Pricier than about 75% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameSTARRETT

Questions about this item

Which Starrett level models does the PT99433 brass tube fit?

The PT99433 replacement tube is made for the Starrett 98-18 machinists level and matches Grainger items 26Z903 and 26Z904

Will this brass tube work with older Starrett levels that are not the 98-18?

The tube is listed only for the 98-18 model and the two Grainger cross-references; compatibility with other Starrett levels is not confirmed

How can I verify the PT99433 tube is seated correctly after installation?

Place the level on a known-flat surface and check that the bubble centres in the vial; consistent readings confirm the brass tube is properly fitted

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