Open-Cell vs Closed-Cell Foam
Cell structure changes how a gasket responds to air, moisture, compression and recovery. Select it around the intended joint function rather than the foam name alone.
DRAWING-BASED CUSTOM PARTS
Custom Foam Gaskets
Die-cut foam gaskets manufactured to drawings for sealing, cushioning, dust control, vibration isolation and enclosure applications.
Share your drawing, dimensions and application conditions for a material and manufacturing review tailored to the joint design.
Made for Your Application
Foam gaskets are cut from open-cell or closed-cell materials selected around ingress protection, compression force, temperature and chemical exposure. Their thickness and profile create a repeatable compressed barrier around an enclosure without machining rigid parts.
Material approach
Foam conforms to uneven interfaces at relatively low clamp force, which makes it practical for thin panels and complex enclosures.
Key features
- Low-force compression
- open- or closed-cell choices
- custom apertures
- PSA mounting
- continuous-frame layouts.
Custom Specifications
Typical values for reference only. Final material grade, tolerance and dimensional capability are confirmed after drawing review.
| Part type | Custom die-cut foam gasket |
|---|---|
| Available materials | EPDM, silicone, EVA, PE and PU foam options |
| Thickness range | Material and construction dependent |
| Typical thickness | Selected after drawing and compression review |
| Maximum sheet / part size | Project dependent |
| Profile tolerance | Drawing review required |
| Thickness tolerance | Material grade dependent |
| Adhesive options | One-side or double-side PSA where suitable |
| Delivery format | Individual parts, sheets or liner-retained parts |
| Temperature range | Selected material grade dependent |
| Cell structure | Open-cell or closed-cell options |
MATERIAL SELECTION
Foam Gaskets Material Comparison
Use this as a starting point only; the selected grade and construction are confirmed against the drawing and application.
| Material | Cell Structure | Temperature | Water Resistance | Compression | Best For |
|---|---|---|---|---|---|
| EPDM Foam | Closed-cell options | Grade dependent | Grade dependent | Grade dependent | Weather-exposed sealing and cushioning |
| Silicone Foam | Open or closed-cell options | Grade dependent | Grade dependent | Grade dependent | Temperature-sensitive enclosure applications |
| EVA Foam | Closed-cell options | Grade dependent | Grade dependent | Grade dependent | Cushioning and spacing |
| PE Foam | Closed-cell options | Grade dependent | Grade dependent | Grade dependent | Lightweight sealing and packaging interfaces |
| PU Foam | Open-cell options | Grade dependent | Grade dependent | Grade dependent | Soft damping and dust-control interfaces |
PRODUCT EXAMPLES
Custom Part Gallery
CONVERTING OPTIONS
Manufacturing & Finish Options
Compression target, seam layout and cell type should be defined before selecting foam thickness.
Custom Die Cutting
A repeatable route for defined foam profiles after tooling and project review.
Custom Die Cutting →CNC Knife Cutting
A flexible route for complex profiles and variable-volume projects.
CNC Knife Cutting →Kiss Cutting
Liner-retained parts and pull-tab layouts for placement workflows.
Kiss Cutting →Adhesive Backing
PSA and liner configurations selected around the mounting surface and assembly method.
Adhesive Backing →Industrial Laminating
Foam, film, fabric and adhesive layers reviewed as a material construction.
Industrial Laminating →DESIGN REVIEW
Engineering Guide
Practical points to include when selecting foam and preparing a drawing for review.
Compression Target
Specify the available joint gap and closure load. The target compression should be reviewed with the chosen foam grade so the gasket is not simply crushed flat.
Compression Force Deflection
Compression response is grade specific. Share the required closure force, contact area and expected deflection when the assembly has a limited clamp load.
Foam Density and Compression Set
Density, recovery and long-term set should be evaluated together against service temperature, time under load and the required sealing or damping function.
Adhesive Selection
Adhesive is normally used for installation retention, not as a substitute for the joint design. Include the mating surface, temperature and placement method in the RFQ.
Land Width, Holes and Cutouts
Keep sufficient supporting material around apertures and narrow bridges. Critical dimensions, hole locations and unsupported features should be identified on the drawing.
Water and Dust Sealing
Ingress performance depends on the selected foam grade, compression level, enclosure design, joint geometry and validation testing.
Do not assume an IP rating from the foam material alone.
Applications / Where It Fits
Suitable construction depends on the enclosure design, closure force, selected foam grade and the actual environmental requirement.
When This Part May Not Be the Best Choice
Foam gaskets may not be the best choice for extremely high bolt load, very tight dimensional stability, aggressive chemical exposure or prolonged fluid immersion. Depending on the application, solid rubber, PTFE or silicone rubber may be more appropriate.
PROJECT DELIVERY
Manufacturing Capabilities
Available options are confirmed against the selected material, drawing and order requirements.
| Capability | Options |
|---|---|
| Cutting | Die cutting / CNC knife cutting / project-specific review |
| Adhesive | One-side / double-side PSA where suitable |
| Delivery format | Individual parts / sheets / kiss-cut liner |
| Prototype | Project review available |
| Production | Prototype to production-volume review |
| Drawing formats | PDF / DXF / DWG / STEP |
| Inspection | Requirements confirmed during drawing review |
| Secondary operations | Adhesive lamination and liner configurations where suitable |
Drawing Requirements
Recommended drawing formats
Please include
- Overall dimensions
- Thickness
- Hole size
- Critical tolerances
- Material preference
- Adhesive requirement
- Quantity
- Application environment
No drawing available? Send a sketch, dimensions or application details and we can review feasibility.
Frequently Asked Questions
Should I choose open-cell or closed-cell foam?
Closed-cell foam is generally selected for water and dust barriers; open-cell foam is better where air flow or very soft compression is desired.
How much should a foam gasket compress?
The workable range depends on the grade, but a controlled partial compression is preferable to crushing the foam flat.
Can a foam gasket include bolt holes and cut-outs?
Yes. Die cutting can add holes, windows, mitres and registration features in the same operation.
Is adhesive required on every foam gasket?
No. Adhesive is used for installation retention; a clamped gasket can often seal without it.
Can foam gaskets be kiss-cut on release liner?
Kiss-cut liner formats can be reviewed when the material, adhesive construction and placement method are defined.
Can you manufacture prototypes?
Prototype and production routes are reviewed against the selected foam, profile, quantity and project requirements.
What drawing formats do you accept?
PDF, DXF, DWG, STEP, STP, IGES, dimensioned sketches and clear reference images can be used for an initial review.
Can you recommend a foam material if I do not know the grade?
Yes. Share the application, joint gap, compression conditions, environment and any mounting requirement for a focused material review.
Can foam gaskets be supplied in rolls or sheets?
Delivery format is reviewed around the material construction, part geometry, liner requirement and assembly workflow.
Can you make foam gaskets to my drawing?
Yes. CAD files, PDFs, dimensioned sketches and clear reference images can be reviewed for a custom quotation.
CONTINUE YOUR RESEARCH
Related Parts, Materials & Capabilities
DRAWING-BASED MANUFACTURING
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Upload a drawing or share dimensions, material preference and quantity. We will review the application and recommend a suitable manufacturing approach.
- Drawing or dimensionsPDF, CAD file, sketch or a clear image
- Material and applicationShare what you know; operating conditions help
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