JIS 5K / JIS 10K Rubber Expansion Joint Dimensions
Mingchao manufactures and stocks rubber expansion joints with JIS 5K and JIS 10K flange configurations. Verified production dimensions are listed below for DN25 to DN300.
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JIS 5K Rubber Expansion Joint Dimensions
In-stock JIS 5K rubber expansion joint dimensions from DN25 to DN300.
All dimensions are in millimeters unless otherwise specified.
| DN | Inch | Standard Length H (mm) | Optional H1 (mm) | Optional H2 (mm) | Optional H3 (mm) | Flange O.D. d (mm) | Bolt Circle D (mm) | Bolt Hole φ × Qty. | Raised Face b2 (mm) | Flange Thickness b1 (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 1 | 95 | 130 | — | — | 95 | 75 | Φ12×4 | 10 | 12 |
| 32 | 1.25 | 95 | 130 | 150 | 200 | 115 | 90 | Φ14×4 | 10 | 12 |
| 40 | 1.5 | 95 | 130 | 150 | 200 | 120 | 95 | Φ14×4 | 10 | 12 |
| 50 | 2 | 105 | 130 | 150 | 200 | 130 | 105 | Φ14×4 | 10 | 14 |
| 65 | 2.5 | 115 | 130 | 150 | 200 | 155 | 130 | Φ14×4 | 10 | 14 |
| 80 | 3 | 135 | 130 | 150 | 200 | 180 | 145 | Φ18×4 | 11 | 14 |
| 100 | 4 | 150 | 130 | 150 | 200 | 200 | 165 | Φ18×8 | 12 | 16 |
| 125 | 5 | 165 | 130 | 150 | 200 | 235 | 200 | Φ18×8 | 13 | 16 |
| 150 | 6 | 180 | 130 | 150 | 200 | 265 | 230 | Φ18×8 | 14 | 18 |
| 200 | 8 | 210 | 130 | 150 | 200 | 320 | 280 | Φ22×8 | 15 | 20 |
| 250 | 10 | 230 | 130 | 150 | 200 | 385 | 345 | Φ22×12 | 16 | 22 |
| 300 | 12 | 245 | 130 | 150 | 200 | 430 | 390 | Φ22×12 | 16 | 22 |
JIS 10K Rubber Expansion Joint Dimensions
In-stock JIS 10K rubber expansion joint dimensions from DN25 to DN300.
All dimensions are in millimeters unless otherwise specified.
| DN | Inch | Standard Length H (mm) | Optional H1 (mm) | Optional H2 (mm) | Optional H3 (mm) | Flange O.D. d (mm) | Bolt Circle D (mm) | Bolt Hole φ × Qty. | Raised Face b2 (mm) | Flange Thickness b1 (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 1 | 95 | 130 | — | — | 125 | 90 | Φ18×4 | 10 | 12 |
| 32 | 1.25 | 95 | 130 | 150 | 200 | 135 | 100 | Φ18×4 | 10 | 12 |
| 40 | 1.5 | 95 | 130 | 150 | 200 | 140 | 105 | Φ18×4 | 10 | 16 |
| 50 | 2 | 105 | 130 | 150 | 200 | 155 | 120 | Φ18×4 | 10 | 16 |
| 65 | 2.5 | 115 | 130 | 150 | 200 | 175 | 140 | Φ18×4 | 10 | 18 |
| 80 | 3 | 135 | 130 | 150 | 200 | 195 | 150 | Φ18×8 | 11 | 18 |
| 100 | 4 | 150 | 130 | 150 | 200 | 210 | 175 | Φ18×8 | 12 | 18 |
| 125 | 5 | 165 | 130 | 150 | 200 | 250 | 210 | Φ22×8 | 13 | 20 |
| 150 | 6 | 180 | 130 | 150 | 200 | 280 | 240 | Φ22×8 | 14 | 22 |
| 200 | 8 | 210 | 130 | 150 | 200 | 330 | 290 | Φ22×12 | 15 | 22 |
| 250 | 10 | 230 | 130 | 150 | 200 | 400 | 355 | Φ24×12 | 16 | 24 |
| 300 | 12 | 245 | 130 | 150 | 200 | 445 | 400 | Φ24×16 | 16 | 24 |
How to Read the Dimension Tables
- DN — Nominal Diameter
- Nominal pipe size in millimeters.
- Inch
- Corresponding inch size shown in the production table.
- H — Standard Face-to-Face Length
- Standard installation length of the rubber expansion joint.
- H1 / H2 / H3 — Optional Face-to-Face Lengths
- Alternative production lengths where listed in the dimension table.
- d — Flange Outside Diameter
- Outside diameter of the flange.
- D — Bolt Circle Diameter
- Pitch circle diameter of the flange bolt holes.
- Bolt Hole φ × Qty.
- Bolt-hole diameter and number of bolt holes.
- b2 — Raised Face Thickness
- Raised-face dimension shown in the production table.
- b1 — Flange Thickness
- Flange thickness shown in the production table.
Stock Availability & Custom Options
Listed DN25–DN300 dimensions are currently produced and stocked. Larger common sizes are available, and custom face-to-face lengths and flange drilling can be produced for project requirements.
Technical Questions
Are GB PN16 and ANSI 150LB rubber expansion joint flanges interchangeable?
No. Flange drilling and dimensional requirements must be confirmed against the specified piping standard before ordering.
Are JIS 5K and JIS 10K dimensions the same?
No. The flange outside diameter, bolt circle and bolt-hole arrangement vary by standard and size. Use the corresponding dimension table for selection.
What information is required for a rubber expansion joint quotation?
Provide the product type, DN/NPS, flange standard, pressure rating, medium, operating temperature, face-to-face length, quantity and application.
Are custom face-to-face lengths available?
Yes. Custom lengths and flange drilling can be reviewed for project-specific production.
Request a Technical Review
Send the required DN/NPS, flange standard, pressure rating, medium, temperature, face-to-face length, quantity and application requirements.