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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

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

Bottom line: The Captain O-Ring ($12.99 on Amazon as of 2026-10-07): Cuts key travel 0.4mm for a softer, quieter bottom-out; main trade-off: install means pulling every keycap off by hand.

$12.99

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Buy on Amazon — $12.99 Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Cuts key travel 0.4mm for a softer, quieter bottom-out
  • ✓ 135 O-rings covers a full keyboard with spares
  • ✓ EPDM rubber resists cracking and tearing over time
  • ✓ Includes a microfiber screen-cleaning cloth

Cons

  • ✗ Install means pulling every keycap off by hand
  • ✗ 0.4mm reduction is subtle, not a dramatic change
  • ✗ Softer landing slightly mutes the tactile bump
  • ✗ Blue only; no ring-thickness options in this pack

Manufacturer description

These Captain O-Ring keyboard switch dampener o-rings can be quickly installed on the stems of your keyboard keys to prevent keys from bottoming out. Bottoming out occurs when a key is pressed down to its limit, causing the key stem to collide with the switch casing. This results in a loud "clacking" noise while typing that affects virtually every mechanical keyboard. Captain O-Rings's keyboard dampeners provide a shock absorber at the bottom of each key to create a consistent, uniform sound while typing. These dampeners also reduce the travel of keys by 0.4mm, which greatly reduces finger…

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SpecPicks Verdict

SpecPicks scored Captain O-Ring using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Captain O-Ring's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 0.4mm travel reduction for a softer landing and better shock absorption
  • Significantly reduces keyboard sound level
  • Minimizes finger fatigue by shortening travel and lessening impact
  • High quality EPDM rubber resists cracking and tearing
  • Includes 135 O-Rings & Captain O-Ring Screen Cleaning Microfiber Cloth

Full Specifications

BrandCaptain O-Ring
ColorBlack
StyleContemporary
ThemeKeyboard Accessories
MaterialRubber
Style NameContemporary
Unit Count1 Count
Switch TypeMechanical
Model NumberBC72657
Power SourceWired
CompatibilitySwitch
Built-In Media135 x Rubber O-rings, 1 Screen Cleaning Microfiber Cloth
Number of Keys135
Button Quantity135
Keyboard LayoutQWERTY
Mfr Part NumberBC72657
Special FeatureTravel
Antenna LocationAll
Hand OrientationAmbidextrous
Compatible DevicesKeyboard

Ready to buy?

Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $12.99

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)
$12.99
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