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Dowty Sealing Washer for BSP Ports

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If your BSP fitting or port does not have a sealing flare or O-ring chamfer, you should use a Dowty Sealing Washer to seal the connection at the face of the female port. Dowty Sealing Washers are comprised of a flanged rubber insert bonded to the inside of a thick aluminum washer. The rubber insert is molded to stand slightly proud of each side of the washer to ensure a good seal.

If your male fitting has a concave flare at the end and the female has a matching convex flare, no sealing washer should be used. If the female port has a chamfer, use one of our BSP O-Ring Seals (Part No. 3243-Size).

Note: BSP nomenclature can be confusing because the nominal size refers to the inside diameter of the pipe, not the outside diameter of the threads. If you are not sure what size you need, check in our Threaded Fitting Guide.

Dowty Sealing Washer Dimensions
BSP SizeIDOD
1/8 BSP0.38"0.60"
1/4 BSP0.51"0.80"
3/8 BSP0.66"0.94"
1/2 BSP0.84"1.13"
5/8 BSP0.91"1.25"
3/4 BSP1.07"1.37"

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.
Desc.
Price
Status

3240-1/8 BSP
Condition: New

Dowty Sealing Washer for 1/8 BSP Ports

1 to 9: $1.79

10 to 99: $1.59

100 & up: $1.39

In Stock

3240-1/4 BSP
Condition: New

Dowty Sealing Washer for 1/4 BSP Ports

1 to 9: $1.89

10 & up: $1.68

In Stock

3240-3/8 BSP
Condition: New

Dowty Sealing Washer for 3/8 BSP Ports

1 to 9: $1.99

10 to 99: $1.77

100 & up: $1.55

In Stock

3240-1/2 BSP
Condition: New

Dowty Sealing Washer for 1/2 BSP Ports

1 to 9: $2.49

10 to 99: $2.22

100 & up: $1.95

In Stock

3240-5/8 BSP
Condition: New

Dowty Sealing Washer for 5/8 BSP Ports

1 to 9: $2.99

10 & up: $2.67

Not In Stock
notify me when available

3240-3/4 BSP
Condition: New

Dowty Sealing Washer for 3/4 BSP Ports

1 to 7: $3.99

8 to 59: $3.58

60 & up: $3.16

In Stock
 

Dowty Sealing Washers

5

Excellent product. A quick solution to tough leaks. Great customer service, quick delivery. Will use them again without hesitation.

Sportycarguy

Pa.

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Thank You

5

I just wanted to say that the staff helped me out with my purchase and the item was delivered fast. The item I wanted fit perfectly

airborne

pa

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Dowty Sealing Washer for BSP Ports

5.0 2

100.0