Pull-style expander seals use an integrated mandrel to insert the expander plug into a drilled hole. The KOENIG EXPANDER® Series SK / SKC 550 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. If you are unsure if the SK / SKC 550 expander sealing plug series is the right component for your application, use our Product Selector to identify the best KOENIG EXPANDER part for your specifications.
Material:
Sleeve: Case Hardening Steel, Gun Metal-Finish
Mandrel: Heat Treatable Steel, Special Oil Film Lubrication
KOENIG EXPANDER® SEALING PLUGS Series SK 550 / SKC 550 | |||||||||
Part Number | d1 | l1 | d2 | l2 | l3 max. | l4 max. | d3 | Packaging Unit* | Weight in gram/pcs. |
+0.12 0 | |||||||||
SKC550-040 | 4 | 4.5 | 2.5 | 39 | 8.1 | 6.5 | 4 | 100 / 1000 | 1.71 |
SKC550-050 | 5 | 5.5 | 2.8 | 41 | 9.5 | 7.5 | 5 | 100 / 1000 | 2.5 |
SKC550-060 | 6 | 6.5 | 3.3 | 38 | 11.5 | 8.5 | 6 | 100 / 500 | 3.5 |
SKC550-070 | 7 | 7.5 | 4 | 38 | 13 | 9.5 | 7 | 100 / 500 | 5.1 |
SK550-080 | 8 | 8.5 | 4.2 | 40 | 15 | 10.5 | 8 | 100 / 500 | 6.33 |
SK550-090 | 9 | 9.5 | 4.5 | 43 | 17 | 11 | 9 | 100 / 250 | 8.23 |
SK550-100 | 10 | 10.5 | 4.75 | 45 | 19 | 12.5 | 10 | 100 / 250 | 10.57 |
SK550-120 | 12 | 12.5 | 5.7 | 50 | 24 | 16.5 | 12 | 50 / 250 | 16.77 |
PRESSURE PERFORMANCE | |||||||
Base Material of the Installation | |||||||
Series | High Strength Steel | Case Hardened Steel | Ductile Cast Iron | Gray Cast Iron | Aluminum-Alloy | Aluminum-Alloy | Cast Aluminum-Alloy |
SK 550 | ETG-100 / 44SMn28 | C15Pb / 1.0403 | EN 1563: GJS-600-3 | EN 1561: GJL-250 | AICu4Mg1 / EN AW-2024-T3 | AIMgSiPb / EN AW-6012-T6 | G-AISi7Mg / EN-AC-42100 |
mm | AISI 11441 | AISI 10L15 | ASTM A536: 80-60-03 | ASTM A48: NO.35 | AA: 2024 T4/T6* | AA: 6012-T6 | ASTM/UNS: A356 |
Ø 4 – 10 | 1600 bar / 23200 psi | 1400 bar / 20300 psi | |||||
500 bar / 7200 psi | 450 bar / 6500 psi | ||||||
Ø 12 | 1600 bar / 23200 psi | ||||||
400 bar / 5800 psi | |||||||
Proof Pressure Test B Max. allowable Working Pressure = Nominal Pressure *SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material. |