Rubber Expansion Joint Size Range & Custom Options
Mingchao produces rubber expansion joints in standard and project-specific sizes for water, HVAC, pump and industrial piping systems.
View all rubber expansion joint standards · View KXT Single Sphere Rubber Expansion Joint
Listed Stock Sizes
DN25–DN300 sizes listed in Mingchao’s published dimension tables are currently produced and stocked.
Larger Sizes
Common larger rubber expansion joint sizes are available up to DN1600. Maximum project sizes up to DN3000 are available upon request.
Standard & Optional Face-to-Face Lengths
Published tables contain Standard Length H and, where listed, Optional H1, Optional H2 and Optional H3.
Alternative face-to-face lengths are available where listed, and project-specific lengths can be reviewed for custom production.
Custom Flange Drilling
Custom flange drilling can be produced for project requirements when the required flange dimensions are provided or confirmed before production.
Available Verified Flange Configurations
Small-Batch & Project Production
Small-batch production and project-specific dimensional configurations are available for technical review.
Information Required for Technical Review
- Product Type
- DN / NPS
- Flange Standard
- Pressure Rating
- Face-to-Face Length
- Medium
- Operating Temperature
- Working Pressure
- Quantity
- Application
- Destination Country / Project Market
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.
What is the largest rubber expansion joint size available?
Published standard tables show sizes to DN300. Common larger sizes are available up to DN1600, and project sizes up to DN3000 are available upon request.
Request a Technical Review
Send the required DN/NPS, flange standard, pressure rating, medium, temperature, face-to-face length, quantity and application requirements.