When used as an interface in audio electronic applications, this heat-resistant, vibration-control material minimizes microphonic influence. Custom-formulated, silicone-based viscoelastic is firm, just barely "squishy," and compliant. Use as an interface between component shelf and rack, between platform and shelf, under mass-loading weight, under small desktop speakers, wherever superior vibration control or decoupling is needed. Provides superior isolation with turntable and turntable plinth applications. Effective throughout a broad range of weight loads. 1/16" (1.6mm) thick.
Optional pressure-sensitive adhesive on one side bonds well to most materials. (Adhesive can be applied to both sides by special request.)
Diameter: Metric sizes available: 1/2"
$.50 to .75 each
(w/adhesive: + $.75 ea.)
$1.00 to 1.45 each
(w/adhesive: + $1.00 ea.)
$1.95 to 2.50 each
(w/adhesive: + $1.25 ea.)
$2.65 to 4.89 each
(w/adhesive: + $1.50 ea.)
Thin grungebuster Dots: Same as above, except 1/32" thick (.8mm). Use between constrained layer materials instead of adhesive for superior damping and wherever a slightly compliant decoupling interface is desired. Ideal as an interface between cones and component or shelf - placing a grungebuster Dot on the flat side of a cone absorbs vibration and allows the cone to work more efficiently with a little less of its own "character." Though rarely needed, all Thin grungebuster Dots are available with optional pressure-sensitive adhesive on one side (or on both sides by special request). Black grungebuster Dots are a little firmer than off-white grungebuster Dots.
Available in off-white
(w/adhesive: + $.60 ea.)
5/8" dia.: $.49
3/4" dia.: $.69
7/8" dia.: $.79
25mm dia.: $.89
1" dia.: $.89
26mm dia: $.89
1-1/8" dia.: $.94
1-1/4" dia.: $.99
1-5/16" dia.: $1.09
1-3/8" dia.: $1.19
1-1/2" dia.: $1.49
40mm dia.: $1.89
50mm dia.: $2.49
2" dia.: $2.49
2-1/2" dia.: $3.29
Extra-Thick grungebuster Dots: 1/8" (3.2mm) Extra-Thick grungebuster Dots are perfect for severe vibration conditions, heavy-duty rack/shelf/platform decoupling, desktop speaker isolation, turntable plinth and platform support, general decoupling and vibration control. (Available with optional pressure-sensitive adhesive.)
5/8" dia. Extra-Thick Dots
5/8" dia.: $1.19
3/4" dia.: $1.49
7/8" dia.: $2.45
1" dia.: $3.69
1-1/4" dia.: $4.49
1-5/16" dia.: $4.65
1-3/8" dia.: $4.95
1-1/2" dia.: $5.29
-Other sizes available by request-
Damping Sheets: Cut your own Dots, squares, gaskets, anything. Cuts easily with razor blade, hobby knife, or scissors. Heat resistant, highly flexible microphonics-absorbing/decoupling/isolation materials. Great as a decoupling interface between different materials and as a damping layer in constrained layer systems.
grungebuster: Versatile, multi-purpose damping/isolation.
dBNeutralizer: Ideal for component chassis damping and loudspeaker applications. At 140 grams per 5" x 8" sheet, this damping sheet is nearly three times heavier and vastly more effective than equivalent-size 3M Damping Sheet.
Adhesive: Damping sheets are available with optional pressure-sensitive adhesive (except GIANT dBNeutralizer). Silicone medical adhesive can also be used as a superior adhesive. Here are links to three very good adhesives:
Hollister #7730 Medical Adhesive (small spray can)
Secure II Medical Adhesive (small bottle w/brush-on applicator)
3M Pressure-Sensitive Adhesive (double-sided adhesive tape)
All damping sheets are 5" x 8" (except dBNeutralizer GIANT 9" x 12" sheet)
.8mm (1/32") thin sheet: $12.95
(w/pressure-sensitive adhesive: $17.95)
1.6mm (1/16") standard sheet: $19.46
(w/pressure-sensitive adhesive: $24.46)
3.2mm (1/8") Extra-Thick: $34.95
(w/pressure-sensitive adhesive: $39.95)
3.2mm (1/8") sheet: $39.95
(w/pressure-sensitive adhesive: $44.95)
GIANT 9" x 12" sheet: $89.95
Temperature Range: Optimal Load
-80F to 400 F
(-62C to 204C)
w/adhesive: to 250F (120C)
up to 33 lbs
per sq. in.
500 1 x 1014 dBNeutralizer
-55 F to 482 F
(-48 C to 250 C)
w/adhesive: to 250F (120C)
2 to 100 lbs
(0.9 to 45kg)
per sq. in.
70 1 x 1015
Headshell Special: 2" x 2" square, thin grungebuster Damping Sheet. Perfect for making your own headshell gasket or other small project. Cut with scissors, hobby knife, small hole punch.
.8mm (1/32") thin sheet, 2" x 2": $1.89
What it is: Herbie's isolation materials are proprietary silicone-based vinyl elastomers with variable compliance and firmness qualities. The materials will absorb vibration with very little pressure applied, yet will handle a lot of weight. These compliant, non-vulcanized compounds are not dependent on a precise weight load to be most effective. They are equally effective under a wide range of weight and have little or no resonant "coloration." Invented and formulated solely for audio and video applications, these proprietary materials are unsurpassed in their ability to absorb microphonic vibrations and reduce audio distortion. Materials are smudge-free and residue-free, with excellent dielectric (insulating) properties.
Message: What size and color would you recommend for use between the headshell and cart?
Webmaster's reply: Most of our customers use regular thin grungebuster material (off-white) between headshell and cartridge with excellent results. Scroll up the page just a little to see our "Headshell Special" for just $1.89.
Message: What can I use for the windows?
Webmaster's reply: Some of our customers use grungebuster Dots or Extra-Thick grungebuster Dots on window panes to tame vibrational issues. (For room acoustic treatment, curtains, blinds, etc. can be appropriate.)
I picked up an older steel rack with wheels. The wheels are the split type(2 wheels housed in the locking roller instead on one). Since I have 2 thin wheels, would damping sheets under the wheels work for me?
Webmaster's reply: Yes, Mike. dBNeutralizer damping sheet is appropriate for this application, or "Thin" Fat Dots which are the same dBNeutralizer material.
Message: Hi Steve.
I know tenderfeet work better directly under components. But, what about grungebuster dots under the feet of my cambridge audio cd player and amplifier?
Will they work fine? Is it worth it?
Webmaster's reply: Depending on synergies involved with the vibrational environment, grungebuster Dots under the stock feet might be beneficial, or maybe not. Placing compliant material under the stock feet somewhat unconstrains the footer, allowing the footer material more freedom to resonate and reverberate, which is especially a problem with stock rubber feet. You'd likely get some decoupling benefit at the cost of sonic linearity. Using Tenderfoot isolation feet instead will provide a superior decoupling and much better control of the component's internally generated vibrations which is a major cause of a lot of the grunge and glare in audio. Though using Dots may be worth an audition if you have some to experiment with, four Tenderfoot isolation feet under each component, in direct contact with the component chassis, is the way to go if you want to bring out more of the best inherent potential of your gear.
Message: These products work a lot better than Blu-Tac and isonodes. i have Dots under platforms and shelfs and under desktop speakers.
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