Series MB 850 Expander

Part Number

MB 850

Material

Case hardened steel & Bearing Steel

Overview

The Series MB 850 Koenig expander plug effectively seals drilled holes with complete reliability. The expander technology forms a complete metal-to-metal seal as the bearing steel ball is pressed into the zinc coated, case hardened sleeve. Metal-to-metal expander technology removes the need for any sealants, adhesives, or rags, reducing lifetime costs of the seal and improving sustainability.

Product Highlights

High hardness materials provide high durability and strength
Can with stand high tollerences of pressure
Wide size range for various applications

Technical Specs

Sleeve

Case Hardened Steel Zinc Plated, Thick Coat Passivated, CR (VI)-Free

Ball

Bearing Steel, Heat Treated

Hardness

HB=180

Dimensions In

Size Range & Pressure

Up to 350 Bar (5,000psi) From 3.0 - 22.0mm

Koenig Expander Series MB 850 push type sealing plug

Product Number	d1	l1	(l2) ~ Ref.	d2 +0.10 / -0	d3 Max	l3 min.	x ±0.2	(s) ~ Ref.	Packaging Unit	Weight in gram/pcs.	3D CAD
MB 850-030	3	3.6	4.6	3	2.2	3.4	0.4	1.2	100 / 1000	0.17	View CAD
MB 850-040	4	4	5.2	4	3.3	3.8	0.2	1.5	100 / 2000	0.34	View CAD
MB 850-050	5	5.5	7.1	5	4.3	5.3	0.4	2	100 / 2000	0.68	View CAD
MB 850-060	6	6.5	8.6	6	5.3	6.3	0.4	2.5	100 / 2000	1.17	View CAD
MB 850-070	7	7.5	10.1	7	6.4	7.3	0.4	3	100 / 1000	1.91	View CAD
MB 850-080	8	8.5	11.6	8	7.4	8.3	0.3	3.5	50 / 1000	2.84	View CAD
MB 850-090	9	10	13.6	9	8.4	9.8	0.4	4	50 / 500	4	View CAD
MB 850-100	10	11	15.1	10	9.4	10.8	0.4	4.5	50 / 500	5.47	View CAD
MB 850-120	12	13	17.9	12	10.6	12.8	0.4	5.5	50 / 250	9.31	View CAD
MB 850-140	14	15	20.6	14	12.7	14.5	0.4	6.35	50 / 250	14.72	View CAD
MB 850-160	16	17	23.4	16	14.7	16.5	0.6	7	25 / 100	22	View CAD
MB 850-180	18	19	26.4	18	16.7	18.5	0.6	8	25 / 100	31.34	View CAD
MB 850-200	20	22	30.1	20	18.7	21.5	0.8	9	25 / 100	44.24	View CAD
MB 850-220	22	25	34	22	20.7	24.5	0.8	10	25 / 50	58.61	View CAD

Series MB 850 mm	Base Material of the Installation
Series MB 850 mm	High Strength Steel ETG-100 / 44SMn28 AISI 1144	Case Hardened Steel C15Pb / 1.0403 AISI 10L15	Ductile Cast Iron EN 1563: GJS-600-3 ASTM A536: 80-60-03	Gray Cast Iron EN 1561: GJL-250 ASTM A48: NO.35	Aluminum-Alloy AICu4Mg1 / EN AW-2024-T3 AA: 2024 T4/T6*	Aluminum-Alloy AIMgSiPb / EN AW-6012-T6 AA: 6012-T6	Cast Aluminum-Alloy G-AISi7Mg / EN-AC-42100 ASTM/UNS: A356
Ø 3 – 10	1100 bar / 16000 psi 350 bar / 5100 psi					1000 bar / 14500 psi 320 bar / 4600 psi
Ø 12 – 22	900 bar / 13000 psi 280 bar / 4100 psi					800 bar / 11600 psi 250 bar / 3600 psi
Proof Pressure Test – Ⓑ Max. allowable Working Pressure = Nominal Pressure *SFC KOENIG’s North American Engineering Department utilizes 2024-T4/T6 as a test base material.

Series MB Setting Tools

Series MB 850 Product Information

Series MB/CV Installation Instructions