Foam Washer Silencer For Sanwa/Seimitsu 30mm Buttons

(21 reviews) Write a Review
(Inc. VAT)
(Ex. VAT)
Calculated at Checkout


The 30mm foam washer silencer is compatible with Sanwa/Seimitsu buttons. Installing one of these foam washer silencers into your button, will help reduce the click of the button press. Now you have the ability to silence Sanwa OBSN screw buttons, or the more recent translucent OBSC buttons and Seimitsu buttons, including the popular PS-14-KN. The 1mm foam washer is shaped to fit in both Sanwa and Seimitsu 30mm buttons.

Please Note:
The Silencer pads are compatible with Hori's Kuro button, but not the more recent matte version due to its construction. 

Unique Shape And Material:
Silencer is a 1mm foam washer that conforms to the internal housing of Sanwa and Seimitsu's 30mm button lineup. It also utilises small "tabs" at each end of the washer, which additionally absorb the sharp sound created as the button plunger's tab meets the rim. Sanwa and Seimitsu - for copyright purposes - deliberately orient their plunger tabs differently from one another. Silencer's tabs can be oriented horizontally or vertically for Sanwa or Seimitsu's unique housing. For Sanwa OBSF, OBSN, OBSC and Seimitsu PS-15 buttons, Silencer's tabs can be snipped off without affecting its ability to reduce noise.

Silencer's foam material was chosen for the closest match to Sanwa's original foam washers. For increased durability, an incredibly thin and flexible plastic film was placed on one side.

installing the Silencer foam pads into a Sanwa or Seimitsu button is straightforward. Place the washer - plastic film side down - into the button housing. Align the small tabs so that they stick out of the holes on each side of the housing. For Seimitsu PS-15 low profile buttons, snip the tabs off with scissors and place into the housing.

Months Of Play-Testing, Sound And Endurance Tests:
The objective of Silencer is to provide an alternative washer for Sanwa and Seimitsu buttons that effectively reduces noise, but also matches the actuation ability and natural feel in Sanwa's OBSFS offering. To do this, we sent prototypes of the washer - originally in clear silicone and later foam - to a group of dedicated testers. Over several months, we learned that foam was more effective in matching Sanwa's original washer and absorbing shock while matching the actuation of Sanwa's own product. We also learned that "springiness" and "mushiness" was an undesired factor in other washers - first with our silicone prototypes, and later with competing solutions.

Further, we performed blind tests with individuals and groups, who assumed that Sanwa's OBSFS buttons were installed. The washers were taken to tournaments in Philadelphia and utilised in joysticks swapped amongst players during the events. Those using Silencers indirectly reported no differences in feel to our testers; they didn't feel "springy" or"mushy", and were able to tap away normals, links and combos as they always did.

Finally, we performed tests in Seimitsu's PS-14-K and KN series of buttons. The KN was most compatible due to its internal housing; Silencers proved effective for both in muffling sound while not restricting their unique feel. Though we couldn't perform blind tests, players that did use them were quite pleased that pads were designed for Seimitsu.


  • 4
    Works on seimitsu

    Posted by Milos Petrov on 4th Nov 2021

    Works for seimitsu but while it does work great on some, it's not the best on others. I guess it's up to me messing up installation but anyway clicky sound is so much better. Use these only if it's a must :D

  • 5
    Quite and satisfying...but not silent.

    Posted by Ebenezer on 5th Jun 2021

    I read reviews about this and knew it would not be silent. As long as you're ok with that, which I suppose you should be considering the normal sound of most (Sanwa) buttons, you'll love these as much as I have.

  • 4
    Worth it.

    Posted by Mark Coyne on 30th Mar 2021

    They don't create full silence, but it's a whole lot quieter without deadening the feeling of the buttons. Definitely worth getting if you're sharing space with others while you play. This was actually a restock for me, since I know they'll eventually wear down, I wanted some spares.

  • 5
    Foam Washer Silencer for Sanwa 30mm

    Posted by Øystein Georgsson on 10th Mar 2021

    Super cheap, fast delivery (ordered to Norway) and great functionality! Recommended for everyone who gets annoyed by the loud sound the buttons make when you play.

  • 5
    Good but be warned

    Posted by Edward on 19th Sep 2019

    They do what they say, they silence the buttons. However, just be warned that the buttons DO feel different. The buttons feel much mushier and less "clicky" .

    They were however, incredibly easy to install (you can install them without removing the wires) and they are good value for the function they server (silencing the buttons).

    As someone who enjoys the clickiness of standard buttons they weren't for me but they're perfect if you feel like your buttons are too clicky or too loud.

  • 5
    30mm foam washer

    Posted by norman graham on 30th May 2019

    really quiet and does the job great

  • 5
    Sanwa Foam Washer

    Posted by Minesh Patel on 4th Apr 2019

    Excellent product. Have added to all my Sanwa buttons. Makes them sound more premium and less noisy.

  • 5
    Foam washer silencer

    Posted by Pete Robinson on 16th Mar 2019

    Brought these the other day for my hori rap v (switch version) as I have a wife who isn't a fan of clicky buttons.

    Took a risk as the website says that they aren't compatable with my buttons. But after a little trimming of the tabs. They work perfectly and really make a big difference to the sound.

    The hori buttons do feel quite different but I'm sure I will get used to them. But the main thing is they are just as responsive. Highly recommend if you are trying to cut down that noise level.

    Also really good service from arcade world

  • 5
    foam washer

    Posted by Hafizul alif Kamaluddin on 17th Jan 2019

    this thing is great, makes a difference when you trying to play at night while everybody sleeps. put it in my hayabusa and works just fine

Customers Also Viewed