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Burgmann-Compatible Mechanical Seals

Replacement seals built to Burgmann and EagleBurgmann designs: elastomer bellows seals, spring seals and double seals, made in-house at manufacturer-direct pricing.

We build most Burgmann seals, not only the types named on this page. Send the seal part number, a drawing or the old seal.

At a glance

  • 01Common requests: MG1 / MG12 / MG13
  • 02M7N / H7N / HJ92N in our catalog
  • 03SiC / Carbon / TC
  • 04Custom & obsolete

We are the manufacturer, not a reseller — we build in-house and supply at quantities that work for a distributor, an OEM or a maintenance department.

Drop-in fitmatched to Burgmann envelopes
OEM dimensionsfaces, springs and hardware to spec
Cost savingsmanufacturer-direct vs OEM pricing

Range

What we supply

Equivalents across the Burgmann range, OEM-compatible or fully custom.

MG elastomer bellows seals

MG1, MG12, MG13, MG1S20 and MG912 equivalents. Dimensions and limits for the MG1 family are on the MG1 / MG12 / MG13 page.

Spring and double seals

M3, M7N, H7N, H12N, HJ92N and M74D equivalents, listed with their limits in our catalog.

Custom & obsolete

Discontinued or non-standard Burgmann seals machined from a drawing or a sample of the old seal.

From our catalog

Burgmann equivalents in our catalog

Common Burgmann designs and the operating limits of our equivalents. Seals not listed here are built from the part number, a drawing or the old seal.

Burgmann designOur modelPressureSpeedTemperature
MG1 / MG12 / MG13MG model pageVacuum to 1.2 MPa≤ 10 m/s-20 to 120 °C
MG912WM MG912≤ 1.0 MPa≤ 10 m/s-20 to 120 °C
M3WM M3≤ 1.0 MPa≤ 10 m/s-20 to 180 °C
H12NWM H12N≤ 1.0 MPa≤ 10 m/s-20 to 180 °C
M7N / M74NWM M7N≤ 1.6 MPa≤ 20 m/s-30 to 200 °C
H7N / H75NWM H7N≤ 2.5 MPa≤ 20 m/s-20 to 200 °C
HJ92NWM HJ92N≤ 2.5 MPa≤ 20 m/s-20 to 180 °C
M74DWM M74D≤ 2.5 MPa≤ 20 m/s-20 to 200 °C

OEM-compatible equivalents built to the original envelope — not sold as genuine Burgmann or EagleBurgmann parts.

Drawings & dimensions

Drawings and dimension tables

The catalog models in the table above, with their section drawings. Dimensions in mm unless a table says inches. Inch sizes are named by the nominal shaft size in inches; d1 gives the same size in mm. Letters match the section drawing. Standard sizes shown; other sizes are built from a drawing or the old seal.

Catalog model

WM MG912 INCH

WM MG912 INCH · seal head and stationary seat
WM MG912 INCH section drawing with dimension letters
Pressure
≤ 1.0 MPa
Speed
≤ 10 m/s
Temperature
-20 to +120 °C
Stationary ring
Ceramic, SiC, tungsten carbide
Rotary ring
Carbon, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and pressed parts
Steel
Modeld1 (mm)d3d2d7l1l11l14l15l2
WMMG912-0.375"9.518.815.8822.2344.030.1525.020.637.95
WMMG912-0.500"12.722.319.0525.4044.030.1525.020.637.95
WMMG912-0.625"15.826.523.8031.7544.033.3325.022.2310.31
WMMG912-0.750"19.029.526.9734.9344.033.3325.022.2310.31
WMMG912-0.875"22.233.030.1538.1044.034.9325.023.8010.31
WMMG912-1.000"25.438.033.3241.2844.039.7025.025.4011.10
WMMG912-1.125"28.541.536.5044.4560.041.2733.027.0011.10
WMMG912-1.250"31.745.039.7047.6360.041.2733.027.0011.10
WMMG912-1.375"34.948.042.8550.8060.042.8533.028.5711.10
WMMG912-1.500"38.152.546.0553.9860.042.8533.028.5711.10
WMMG912-1.625"41.257.050.8060.3360.050.8033.034.9312.70
WMMG912-1.750"44.460.553.9763.5071.050.8041.034.9312.70
WMMG912-1.875"47.664.057.1566.6871.053.9841.038.1012.70
WMMG912-2.000"50.866.060.3369.8572.553.9842.538.1012.70
WMMG912-2.125"53.971.060.3376.2071.060.3341.042.8514.27
WMMG912-2.250"57.176.561.9079.3871.060.3341.042.8514.27
WMMG912-2.375"60.378.565.1082.5571.063.5041.046.0614.27
WMMG912-2.500"63.582.068.2585.7371.063.5041.046.0614.27
WMMG912-2.625"66.684.071.4285.7370.069.8549.049.1915.88
WMMG912-2.750"69.889.074.6088.9070.069.8549.049.1915.88
WMMG912-2.875"73.092.577.7795.2573.073.0252.052.3715.88
WMMG912-3.000"76.295.580.9598.4373.073.0252.052.3715.88
WMMG912-3.125"79.3101.684.12101.6079.079.3756.055.5519.84
WMMG912-3.250"82.5-87.30104.7879.079.3756.055.5519.84
WMMG912-3.375"85.7-90.47107.9579.079.3756.055.5519.84
WMMG912-3.500"88.9111.593.65111.1379.079.3756.055.5519.84
WMMG912-3.625"92.0-96.82114.3083.082.5559.058.7219.84
WMMG912-3.750"95.2118.0100.00117.4883.082.5559.058.7219.84
WMMG912-3.875"98.4-103.17120.6586.085.7262.061.9019.84
WMMG912-4.000"101.6125.0106.35123.8386.085.7262.061.9019.84

Catalog model

WM MG912 METRIC

WM MG912 METRIC · seal head and stationary seat
WM MG912 METRIC section drawing with dimension letters
Pressure
≤ 1.0 MPa
Speed
≤ 10 m/s
Temperature
-20 to +120 °C
Stationary ring
Ceramic, SiC, tungsten carbide
Rotary ring
Carbon, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and pressed parts
Steel
Modeld1 (mm)d3d2d7l1l12l13l14l2
WMMG912-101019.6172144.033.425.925.06.6
WMMG912-121221.6192344.033.425.925.06.6
WMMG912-141424.0212544.033.428.425.06.6
WMMG912-151525.0--44.0--25.0-
WMMG912-161626.5232744.033.428.425.06.6
WMMG912-181829.0273344.037.530.025.07.5
WMMG912-202031.5293544.037.530.025.07.5
WMMG912-222233.0313744.037.530.025.07.5
WMMG912-242437.0333944.042.532.525.07.5
WMMG912-252538.0344044.042.532.525.07.5
WMMG912-282841.0374360.042.535.033.07.5
WMMG912-303043.0394560.042.535.033.07.5
WMMG912-323245.0424860.047.535.033.07.5
WMMG912-333346.0424860.047.535.033.07.5
WMMG912-353548.0445060.047.535.033.07.5
WMMG912-383852.5495660.046.036.033.09.0
WMMG912-404055.5515860.046.036.033.09.0
WMMG912-434358.5546171.051.036.041.09.0
WMMG912-454560.5566371.051.036.041.09.0
WMMG912-484864.0596671.051.036.041.09.0
WMMG912-505066.0627072.550.538.042.59.5
WMMG912-535369.0657371.059.036.541.011.0
WMMG912-555571.0677571.059.036.541.011.0
WMMG912-585876.0707871.059.041.541.011.0
WMMG912-606078.0728071.059.041.541.011.0
WMMG912-636382.07583-59.041.5-11.0
WMMG912-656584.0778570.069.041.549.011.0
WMMG912-686887.0819070.068.741.249.011.3
WMMG912-707089.0839270.068.748.749.011.3
WMMG912-757595.0889773.068.748.752.011.3
WMMG912-8080101.59510579.078.048.056.012.0
WMMG912-8585-10011079.076.046.056.014.0
WMMG912-9090111.510511583.076.051.059.014.0
WMMG912-9595-11012083.076.051.059.014.0
WMMG912-100100122.511512586.076.051.062.014.0

Catalog model

WM M3

WM M3 · seal head and stationary seat
WM M3 section drawing with dimension lettersWM M3 section drawing with dimension letters
Pressure
≤ 1.0 MPa
Speed
≤ 10 m/s
Temperature
-20 to +180 °C

Faces and elastomers are chosen for the duty.

Modeld (mm)d4d7d2d3l1l2l3l4l5
WMM3-101019212019.21015.57.116.9
WMM3-121221232221.610167.617.4
WMM3-141423252424.61016.57.616.517.4
WMM3-1616262726281018916.519.5
WMM3-18182933313011.519.5101820.5
WMM3-20203135343511.5229.51922
WMM3-22223337363511.521.59.520.523.5
WMM3-24243539383811.523.59.52225
WMM3-25253640393811.526.59.523.526.5
WMM3-28284043424211.526.51124.526.5
WMM3-30304345444511.526.51124.525
WMM3-32324648464811.528.5112828.5
WMM3-333347484711.528.5
WMM3-35354950495211.528.511.52828.5
WMM3-3838535654551433.511.53132.2
WMM3-404056585658143611.53434.7
WMM3-43435961591438.5
WMM3-4545616361641439.514.336.539.2
WMM3-484864666468.4144614.34244.7
WMM3-505066706669.3154514.34345.7
WMM3-53536973691547
WMM3-555571757175.4154915.34749
WMM3-585876787878.4155515.35052
WMM3-606078807980.4155515.35155
WMM3-63638383831555
WMM3-656584858585.4155515.35254.3
WMM3-686888908891.518551652.755.3
WMM3-707090929092185715.35456.3
WMM3-757598979899186215.35456.3
WMM3-808010010510310418.261.816.35859.3

Catalog model

WM H12N

WM H12N · seal head and stationary seat
WM H12N section drawing with dimension letters
Pressure
≤ 1.0 MPa
Speed
≤ 10 m/s
Temperature
-20 to +180 °C
Rotary ring
Carbon, SiC, tungsten carbide
Stationary ring
Ceramic, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and metal parts
304 stainless, 316 stainless
Modeld1 (mm)d2d3d7l3l1l2
WMH12N-10101424211025.718
WMH12N-12121626231026.718
WMH12N-14141831251029.718
WMH12N-16162034271031.218
WMH12N-181822363311.532.720
WMH12N-202024383511.532.720
WMH12N-222226403711.532.720
WMH12N-242428423911.532.720
WMH12N-252530444011.533.720
WMH12N-282833474311.535.720
WMH12N-303035494511.535.720
WMH12N-323238544811.539.720
WMH12N-333338544811.539.720
WMH12N-353540565011.543.720
WMH12N-38384359561446.223
WMH12N-40404561581448.223
WMH12N-43434864611451.223
WMH12N-45455066631455.223
WMH12N-48485369661455.223
WMH12N-50505571701558.225
WMH12N-53535878731560.225
WMH12N-55556079751560.225
WMH12N-58586383781560.225
WMH12N-60606585801560.225
WMH12N-63636888831560.225
WMH12N-65657090851561.225
WMH12N-70707598921863.228
WMH12N-757580103971868.228
WMH12N-80808510910518.268.228

Catalog model

WM HJ92N

WM HJ92N · seal head and stationary seat
WM HJ92N section drawing with dimension letters
Pressure
≤ 2.5 MPa
Speed
≤ 20 m/s
Temperature
-20 to +180 °C
Stationary ring
Ceramic, SiC, tungsten carbide
Rotary ring
Carbon, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and pressed parts
Steel
Modeld (mm)d3d6d7l8l1kl3
WMHJ92N-181832273315.037.57
WMHJ92N-202034293515.037.57
WMHJ92N-222236313715.037.57
WMHJ92N-242438333915.040.07
WMHJ92N-252539344015.040.07
WMHJ92N-282842374315.042.57
WMHJ92N-303044394515.042.57
WMHJ92N-323247424815.042.57
WMHJ92N-333347424815.042.57
WMHJ92N-353549445015.042.57
WMHJ92N-383854495616.045.08
WMHJ92N-404056515816.045.08
WMHJ92N-434359546116.045.08
WMHJ92N-454561566316.045.08
WMHJ92N-484864596616.045.08
WMHJ92N-505066627017.047.59.5
WMHJ92N-535369657317.047.59.5
WMHJ92N-555571677517.047.59.5
WMHJ92N-585878707818.052.510.5
WMHJ92N-606080728018.052.510.5
WMHJ92N-636383758318.052.510.5
WMHJ92N-656585778518.052.510.5
WMHJ92N-686888819018,552.511.0
WMHJ92N-707090839219.060.011.5
WMHJ92N-757599889719.060.011.5
WMHJ92N-80801049510519.060.011.5
WMHJ92N-858510910011019.060.011.5
WMHJ92N-909011410511520.565.013.0
WMHJ92N-959511911012020.565.013.0
WMHJ92N-10010012411512520.565.013.0

Catalog model

WM M7N / M74N

WM M7N / M74N · seal head and stationary seat
WM M7N / M74N section drawing with dimension lettersWM M7N / M74N section drawing with dimension letters
Pressure
≤ 1.6 MPa
Speed
≤ 20 m/s
Temperature
-30 to +200 °C
Stationary ring
Ceramic, SiC, tungsten carbide
Rotary ring
Carbon, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and pressed parts
Steel
Modeld1 (mm)d3d6d7l1l3f
WMM7N-141425.02125.035.010.06.0
WMM7N-161627.02327.035.010.06.0
WMM7N-181833.02733.037.011.57.0
WMM7N-202035.02935.037.011.57.0
WMM7N-222237.03137.037.011.57.0
WMM7N-242439.03339.040.011.58.0
WMM7N-252540.03440.040.011.58.0
WMM7N-282843.03743.042.511.58.0
WMM7N-303045.03945.042.511.58.0
WMM7N-323247.04248.042.511.58.0
WMM7N-333348.04248.042.511.58.0
WMM7N-353550.04450.042.511.58.0
WMM7N-383855.04956.045.014.08.0
WMM7N-404057.05158.045.014.08.0
WMM7N-434360.05461.045.014.08.0
WMM7N-454562.05663.045.014.08.0
WMM7N-484865.05966.045.014.08.0
WMM7N-505067.06270.047.515.08.0
WMM7N-535370.06573.047.515.08.0
WMM7N-555572.06775.047.515.08.0
WMM7N-585879.07078.052.515.09.0
WMM7N-606081.07280.052.515.09.0
WMM7N-636384.07583.052.515.09.0
WMM7N-656586.07785.052.515.09.0
WMM7N-686889.08190.052.518.09.0
WMM7N-707091.08392.060.018.09.0
WMM7N-757599.08597.060.018.010.0
WMM7N-8080104.095105.060.018.210.0
WMM7N-8585109.0100110.060.018.210.0
WMM7N-9090114.0105115.065.018.210.0
WMM7N-9595119.0110120.065.017.210.0
WMM7N-100100124.0115125.065.017.210.0

Catalog model

WM H7N / H75N

WM H7N / H75N · seal head and stationary seat
WM H7N / H75N section drawing with dimension lettersWM H7N / H75N section drawing with dimension letters
Pressure
≤ 2.5 MPa
Speed
≤ 20 m/s
Temperature
-20 to +200 °C
Rotary ring
Carbon, SiC, tungsten carbide
Stationary ring
Ceramic, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and metal parts
304 stainless, 316 stainless
Modeld1 (mm)d2d3d6d7l2l1
WMH7N-25253045344036.047.5
WMH7N-28283348374338.550.0
WMH7N-30303550394538.550.0
WMH7N-33333855424838.550.0
WMH7N-35354057445038.550.0
WMH7N-38384360495638.552.5
WMH7N-40404562515838.552.5
WMH7N-43434865546138.552.5
WMH7N-45455067566338.552.5
WMH7N-48485370596638.552.5
WMH7N-50505572627042.557.5
WMH7N-53535879657342.557.5
WMH7N-55556081677542.557.5
WMH7N-60606586728047.562.5
WMH7N-65657091778547.562.5
WMH7N-7070759983925270.0
WMH7N-75758010488975270.0
WMH7N-8080851099510551.870.0
WMH7N-85859011410011056.875.0
WMH7N-90909511910511556.875.0
WMH7N-959510012411012057.875.0

Catalog model

WM M74D

WM M74D · seal head and stationary seat
WM M74D section drawing with dimension letters
Pressure
≤ 2.5 MPa
Speed
≤ 20 m/s
Temperature
-20 to +200 °C
Rotary ring
Carbon, SiC, tungsten carbide
Stationary ring
Ceramic, SiC, tungsten carbide
Secondary seals
NBR, EPDM, Viton
Spring and metal parts
304 stainless, 316 stainless
Modeld1 (mm)d2d7d3l3l1
WMM74D-14142525331025.2
WMM74D-16162727351025.2
WMM74D-181833333711.526.2
WMM74D-202035353911.526.2
WMM74D-222237374111.526.2
WMM74D-242439394311.528.7
WMM74D-252540404411.528.7
WMM74D-282843434611.531.2
WMM74D-303045454811.531.2
WMM74D-323247485011.531.2
WMM74D-333348485011.531.2
WMM74D-353550505311.531.2
WMM74D-38385550601431.2
WMM74D-40405753641431.2
WMM74D-43436058651431.2
WMM74D-45456260681431.2
WMM74D-48486566681431.2
WMM74D-50506770701532.7
WMM74D-53537073741532.7
WMM74D-55557275751532.7
WMM74D-58587978821532.7
WMM74D-60608180841532.7
WMM74D-63638483871532.7
WMM74D-65658685941532.7
WMM74D-68688990921834.7
WMM74D-70709192941842.2
WMM74D-757599971041842.2
WMM74D-808010410510818.242
WMM74D-858510911011318.242
WMM74D-909011411511818.247
WMM74D-959511912012317.248
WMM74D-10010012412512817.248

FAQ

Burgmann-Compatible Seal FAQ

Are these genuine Burgmann seals?

No — they are OEM-compatible equivalents built to Burgmann and EagleBurgmann dimensions. They are not sold as genuine Burgmann parts.

My Burgmann seal is not on this page. Can you make it?

Most likely. The models here are examples. Send the seal part number, a drawing or the old seal and we confirm the fit before quoting.

Can you work from the pump model?

Not on its own. We build from the seal itself: its part number, its drawing or a sample of the old seal.

Can you match obsolete Burgmann seals?

Yes — we machine discontinued patterns from a sample or drawing.

Source Burgmann-Compatible Seals

OEM-compatible and custom-machined Burgmann equivalents built in-house to your spec, at low minimums. Send a part number, a drawing or a sample and we’ll quote.