A practical guide to top gasket mounting in custom mechanical keyboards—how it works, why it changes sound and flex, and how it compares to tray mount, top mount, and other keyboard mounting systems.
Gasket Mount in Mechanical Keyboards: The Quick Overview
In a gasket mount mechanical keyboard, compressible gasket material is placed between the switch plate and the keyboard case. Instead of direct metal-on-metal contact, gaskets isolate the plate to reduce vibrations, refine acoustics, and add controlled flex for a softer, more comfortable typing experience.
What Is a Top Gasket?
A top gasket is a gasket strip or pad placed along the top interface where the plate meets the upper case frame. In many gasket mounting systems, designers use a combination of top, bottom, and side gaskets to suspend the plate in a “hammock-like” configuration. The top gasket helps stabilize and isolate the plate from the top side, contributing to consistent key feel across the layout.
Benefits of a Top Gasket Mount
With a top gasket mount, you can expect:
- Improved acoustics – Deeper, cleaner sound without unwanted case ping.
- Softer typing feel – Cushioned bottom-out for comfort during long sessions.
- Balanced mounting – More consistent feel across all keys.
Best Gasket Materials
- PORON® – Dense, resilient foam for deeper acoustics.
- Silicone – Soft and cushioned typing feel.
- EVA/Neoprene – Budget-friendly but effective dampening.
Top Gasket vs Other Mounting Styles
| Mounting Style | Typing Feel | Sound |
|---|---|---|
| Tray Mount | Stiff, less flex | Pingy, hollow |
| Top Mount | Moderate stiffness | Clean but less isolated |
| Bottom Gasket | Softer, cushioned | Reduced resonance |
| Top Gasket | Balanced, cushioned, consistent | Deep, isolated sound |
Build & Tuning Tips
- Match gasket material to plate stiffness.
- Use foam sparingly to avoid reducing flex.
- Install evenly for consistent compression.
Top Gasket Mount FAQs
Is a top gasket better than tray mount?
Yes, it generally provides better acoustics and comfort.
Does it make keyboards quieter?
Yes, by isolating vibrations and reducing case resonance.
What’s the best gasket material?
PORON is popular for sound; silicone for cushioned feel.
