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Deal.ai › Compare

A81 Felt Valve Washers vs Bundy Buescher Top Cap Felt Washers

These are the same material — 100% wool felt from Italy and Germany — in two different sizes, so the choice is fit, not quality. The A81 is the small washer at 1/2" outer and 3/16" inner diameter, 3/32" thick. The A99 is the large Bundy/Buescher top cap felt at 11/16" outer and 7/16" inner, .100" thick. Buy the one that matches the seat you are replacing; neither is an upgrade over the other.

  • Choose the A81 if you need the small 1/2" x 3/16" x 3/32" washer for a standard valve stem or key seat.
  • Choose the A99 if you are replacing Bundy or Buescher top cap felts and need the 11/16" x 7/16" x .100" size.

Prices

  • A81 Felt Valve Washers: $8.00 at Ferree's Tools Inc (checked today)
  • Bundy Buescher Top Cap Felt Washers: $10.79 at Amazon (last seen Nov 11)
  • Difference: the A81 Felt Valve Washers is $2.79 cheaper than the Bundy Buescher Top Cap Felt Washers at the latest prices (Nov 11 and Nov 12)
A
A81 Felt Valve Washers

A81 Felt Valve Washers

$8.00at Ferree's Tools IncChecked 2 h ago
See all prices and details
Visit Ferree's Tools Inc
Pros
  • Small footprint fits tight valve and key seats
  • Thin 3/32" profile suits shallow recesses
  • Same wool felt as the larger size
  • Four colors for coding or matching
Cons
  • Too small for Bundy/Buescher top caps
  • Only sold in dozens or hundreds
  • Thin felt can compress and need replacing sooner
A
A99 Felt Valve Washers

Bundy Buescher Top Cap Felt Washers

A99 Felt Valve Washers

$10.79at AmazonChecked 22 h ago
See all prices and details
Visit Amazon

Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Correct size for Bundy/Buescher top cap felts
  • Thicker .100" felt for a firmer cap seat
  • Same Italian and German wool felt
  • Four colors available
Cons
  • Too large for standard small valve seats
  • Only sold in dozens or hundreds
  • Wide 7/16" bore will not fit narrow stems

What separates them

A81 Felt Valve WashersBundy Buescher Top Cap Felt Washers
Outer diameter1/2"11/16"
Inner diameter3/16"7/16"
Thickness3/32" (about .094").100"
Intended useGeneral small valve washersBundy/Buescher top cap felts
Material100% wool felt100% wool felt
Country of originItaly and GermanyItaly and Germany
ColorsWhite, black, green, redWhite, black, green, red
Pack quantityDozens or hundreds onlyDozens or hundreds only

Price history

$14.29$1.89
Nov 9Nov 12
  • A81 Felt Valve Washers: lowest $8.99 on Nov 9 at Reverb; $14.29 on Nov 10.
  • Bundy Buescher Top Cap Felt Washers: lowest $1.89 on Nov 12 at Cumberland Guitars.

Prices at every store

A81 Felt Valve Washers

  • ReverbNew

    In stock

    $8.99+ $5.99 shippingChecked Nov 8
    Visit Reverb
  • Allparts MusicNew

    In stock

    $56.94+ $12.87 shippingChecked Nov 8
    Visit Allparts Music
  • Ferree's Tools IncNew

    Availability unknownReturn policy

    $8.00Checked 2 h ago
    Visit Ferree's Tools Inc
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $14.29Free shippingChecked Nov 10
    Visit Amazon

Store links may earn us a commission.

All 4 stores and price history →

Bundy Buescher Top Cap Felt Washers

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $10.79Checked 22 h ago
    Visit Amazon

Also available at

  • Allparts MusicCheck price at Allparts Music
  • Chicago Music ExchangeCheck price at Chicago Music Exchange
  • Cumberland GuitarsCheck price at Cumberland Guitars

Store links may earn us a commission.

Prices and history →

Specs compared

SpecA81 Felt Valve WashersBundy Buescher Top Cap Felt Washers
Frequency Range20 to 250 MHz—
Small Signal Gain26 dB (TYP.)—
Noise Figure2.6 dB (TYP.)—
DC Voltage+15 V—
DC Current33 mA—
VSWR1.5:1 / 1.5:1—
Storage Temperature-62ºC to +125ºC—
Case Temperature125ºC—
Thermal Resistance184ºC/W—
PackageTO-8—
Outer diameter—11/16"
Inner diameter—7/16"
Show all 17 specsShow fewer specs
SpecA81 Felt Valve WashersBundy Buescher Top Cap Felt Washers
Thickness—.100"
Material—100% Wool Felt
Made in—Italy and Germany
Colors available—White, Black, Green, Red
Sold in—Dozens or Hundreds only

Questions and answers

Which one fits a Bundy or Buescher?
The A99. It is sold as the Bundy/Buescher top cap felt at 11/16" outer and 7/16" inner diameter. The A81 is the smaller general washer.
Are they the same felt?
Yes. Both are 100% wool felt made in Italy and Germany, in the same four colors. The only real difference is the cut size.
Which lasts longer?
Neither is built to outlast the other. The A99 is thicker at .100", so it holds its shape longer in a top cap seat, while the thinner A81 compresses faster in a shallow seat.
Can I trim one to fit the other's seat?
Not reliably. Wool felt frays and loses its edge when cut, and a trimmed washer sits unevenly. Buy the size that matches the seat.
Is one worth stepping up to?
There is no step up. They are the same material at different dimensions, so pick by measurement, not by grade.
How do I know which size I need?
Measure the old washer or the seat: outer diameter, inner diameter and thickness. Match those to 1/2" x 3/16" x 3/32" for the A81 or 11/16" x 7/16" x .100" for the A99.

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More comparisons

  • Pack of 10 Felt Washers for Stem, White vs A99 Felt Valve Washers
  • Pack of 10 Felt Washers for Stem, White vs A81 Felt Valve Washers

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