Does 0.4mm in the specs mean 4 millimeters thick? 0.4 millimeters would be very very thin (i.e. less than half a millimeter).

Hello. The 0.4mm is not representative of the size of the o-rings, but rather the reduction in key-stroke travel with these installed. You are correct, the o-rings are thicker than 0.4mm :-). They are actually about 1.75mm thick.

So do you put these on the switch or the keycaps?

you put this on the keycap, on the post that is attached to the switch. As it descends into the switch it hits the switch face. Slightly shortens the travels and dampens the impact.

Does it come with a cap remover?

Hello, this kit does not include a cap remover. Most keyboard keys can be easily removed from the board with anything flat/thin enough to get under the keys and lift.

Will these work with gateron switches?

These should work with any removible mechanical key caps because they are applied to the stem of the key cap, not any part of the switch itself. There are great tutorial videos online if you Google how to apply o rings to key caps. Best of luck!

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Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)

Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)

Product ID: 20598680

Details

Brand
Captain O-Ring
Color
Black
Compatible Devices
Keyboard
Connectivity Technology
USB
Included Components
135 x Rubber 1
Keyboard Description
Mechanical

🔇Significant sound dampening

⌨️0.4mm travel reduction

🖐️Minimizes finger fatigue

3759 som

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Description

🔕 Quiet your keyboard, amplify your focus.

BONUS CLEAN - Includes premium Captain O-Ring microfiber cloth to keep your screen spotless and your setup pristine.
FATIGUE FIGHTER - Shortened key travel reduces finger strain during marathon typing sessions.
SILENT PRECISION - Slash keyboard noise with 0.4mm travel reduction for whisper-quiet typing.
EFFORTLESS UPGRADE - Quick 4-5 minute installation transforms your keyboard’s feel and sound instantly.
ENDURANCE ENGINEERED - Crafted from high-quality EPDM rubber that resists cracking and tearing for long-lasting performance.

Captain O-Ring Rubber O-Ring Keyboard Switch Dampeners reduce key travel by 0.4mm to soften keystrokes and minimize finger fatigue. Made from durable EPDM rubber, these 135-piece dampeners significantly lower typing noise by preventing key bottoming out. Easy to install and built to last, they come with a microfiber screen cleaning cloth for added value.

Specifications

ASIN	B017HJMLDU
Additional Features	Travel
Antenna Location	All
Best Sellers Rank	#1,037 in Computer Keyboards
Brand	Captain O-Ring
Built-In Media	135 x Rubber O-rings, 1 Screen Cleaning Microfiber Cloth
Button Quantity	135
Color	Black
Compatible Devices	Keyboard
Connectivity Technology	USB
Customer Reviews	4.4 out of 5 stars 284 Reviews
EU Spare Part Availability Duration	1 Years
Enclosure Material	Rubber
Hand Orientation	Ambidextrous
Item Weight	0.01 Pounds
Keyboard Description	Mechanical
Keyboard Layout	QWERTY
Manufacturer	Captain O-Ring LLC
Mfr Part Number	BC72657
Model Number	BC72657
Number of Keys	135
Power Source	Wired
Recommended Uses For Product	All
Special Feature	Travel
Style Name	Contemporary
Switch Type	Mechanical
Theme	Keyboard Accessories
UPC	722589526244
Unit Count	1.0 Count

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3759 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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