Pull-style expander seals use an integrated mandrel to insert the expander plug into a drilled hole. This type of KOENIG EXPANDER® plug does not require the hole to be counter-bored, and is often used for angled channels or installations with difficult orientations. They are ideal for installations with space or weight constraints.


- Part Name
- SK 550-120
- d1
- 12
- d2
- 5.7
- d3 +0.12 / -0
- 12
- l1
- 12.5
- l2
- 50
- l3 max.
- 22.5
- L4 Max. (BO)
- 16.5
- Packaging Unit
- 50 / 250
- Weight in gram/pcs.
- 16.77
* SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material.
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