Bonded Washers

Bonded washers are a type of fastening that is designed to create a seal around a screw or bolt. They consist of a hard outer ring, usually made from steel or another metal, and an inner ring, made from an elastic material such as nitrile rubber.

How do bonded washers work?

The elastic inner ring of the bonded washer acts as a kind of gasket between the head and body of the screw or bolt. When the ring is compressed as the bolt or screw is tightened, the pressure seals the ring to the surfaces either side of it.

Why are bonded washers useful?

Their simple but effective sealing action is useful when you need the fixture to be watertight, for example to prevent leakages. They provide a better seal than a simple washer. In addition, because the seal is an inbuilt part of the fixture, the process of using them is easier than using another sealing fixture such as an O-ring.


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Description Price For Screw/Bolt Size Outside Diameter Inside Diameter Thickness
RS Stock No. 689-467
BrandRS PRO
TWD488.00
1 Bag of 50
Bag(s)
- - - -
RS Stock No. 128-827
BrandRS PRO
TWD140.00
1 Bag of 50
Bag(s)
- - - -
New
RS Stock No. 229-6284
Mfr. Part No.207381
TWD791.00
1 Bag of 10
Bag(s)
C27.12 38.61mm 27.82mm 2.5mm
New
RS Stock No. 229-6246
Mfr. Part No.205575
TWD757.00
1 Bag of 10
Bag(s)
B17.06 23.8mm 17.28mm 2.03mm
New
RS Stock No. 229-6310
Mfr. Part No.207407
TWD650.00
1 Bag of 10
Bag(s)
C22 - M22 31mm 22.7mm 2mm
New
RS Stock No. 229-6240
Mfr. Part No.205569
TWD2,822.00
1 Bag of 50
Bag(s)
A6.2 13.21mm 6.86mm 1.22mm
New
RS Stock No. 229-6311
Mfr. Part No.207409
TWD1,984.00
1 Bag of 10
Bag(s)
D36 - M36 48mm 37mm 2.5mm
New
RS Stock No. 229-6248
Mfr. Part No.205576
TWD784.00
1 Bag of 10
Bag(s)
CS17.50 25.4mm 18.16mm 2.5mm
New
RS Stock No. 229-6257
Mfr. Part No.205584
TWD2,832.00
1 Bag of 10
Bag(s)
D34.94 44.45mm 35.94mm 3.38mm
New
RS Stock No. 229-6285
Mfr. Part No.207382
TWD1,289.00
1 Bag of 10
Bag(s)
C31.94 41.4mm 32.64mm 3.38mm
New
RS Stock No. 229-6294
Mfr. Part No.207392
TWD1,685.00
1 Bag of 50
Bag(s)
AX6 - M6 11mm 6.7mm 1mm
New
RS Stock No. 229-6234
Mfr. Part No.205563
TWD1,152.00
1 Bag of 10
Bag(s)
CS24 - M24 32mm 24.7mm 2mm
New
RS Stock No. 229-6258
Mfr. Part No.205585
TWD3,546.00
1 Bag of 10
Bag(s)
D41.30 52.38mm 42.93mm 2.5mm
New
RS Stock No. 229-6312
Mfr. Part No.207410
TWD401.00
1 Bag of 10
Bag(s)
BX10 - M10 17mm 10.7mm 1.5mm
New
RS Stock No. 229-6286
Mfr. Part No.207383
TWD1,691.00
1 Bag of 10
Bag(s)
C33.16 42.8mm 33.89mm 2.5mm
RS Stock No. 128-849
BrandRS PRO
TWD131.00
1 Bag of 50
Bag(s)
- - - -
New
RS Stock No. 229-6241
Mfr. Part No.205570
TWD2,822.00
1 Bag of 50
Bag(s)
AS7.7 13.34mm 8.31mm 1.22mm
New
RS Stock No. 229-6270
Mfr. Part No.207210
TWD507.00
1 Bag of 10
Bag(s)
C20.63 28.58mm 21.54mm 2.5mm
New
RS Stock No. 229-6251
Mfr. Part No.205579
TWD1,182.00
1 Bag of 10
Bag(s)
C22.75 31.75mm 23.49mm 2.5mm
New
RS Stock No. 229-6242
Mfr. Part No.205571
TWD671.00
1 Bag of 10
Bag(s)
B10.16 18.36mm 11.26mm 2.03mm