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RaceFlux Dowty Bonded Sealing Washer, for M28 & -12AN Threads, FKM
$2.99
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Part #
HWA-4028
- Minimum order quantity: 5
Part # HWA-4028
RaceFlux's bonded sealing washers are made from zinc-plated steel with a FKM rubber bonded inner seal. These sealing washers will provide a leak free seal in straight fitting applications designed for crush washers or sealing washers. May also be used in place of an O-ring in applications where the opposing sealing surface does not feature an O-ring gland or O-ring boss.
These bonded sealing washers are "self-centering", meaning that the rubber seal features an additional inner seal with an internal diameter that is smaller than the screw's major thread diameter. With a tight seal around the screw, these washers center themselves while also creating a better seal. These washers work with all standard thread pitches.
Features and Benefits
- Zinc-plated steel with high temp FKM (Viton®) bonded seal.
- Self-centering.
- For straight thread fittings that rely on an O-ring, crush washer, or sealing washer.
- May be used with our straight thread AN fittings or straight thread Metric fittings.
Dimensions
| Part # | Rubber Material | Thickness (mm) | Screw Size |
F (mm) |
I.D. (mm) |
O.D. (mm) |
| HWA-4008 | NBR | 1.0 | M8 | 6.4 | 8.7 | 13 |
| HWA-4010 | NBR | 1.5 | M10, 3/8", and 1/8" BSP | 8.05 | 10.7 | 16 |
| HWA-4012 | NBR | 1.5 | M12, 7/16", -4AN | 9.73 | 12.7 | 19 |
| HWA-4014 | NBR | 1.5 | M14, -6AN | 11.38 | 14.7 | 22 |
| HWA-4016 | NBR | 1.5 | M16, 3/8" BSP | 13.41 | 16.7 | 24 |
| HWA-4018 | NBR | 1.5 | M18 | 14.76 | 18.7 | 26 |
| HWA-4020 | NBR | 1.5 | M20, 1/2" BSP, 13/16" | 16.76 | 20.7 | 28 |
| HWA-4022 | NBR | 2.0 | M22 | 18.74 | 22.7 | 30 |
| HWA-4024 | NBR | 2.0 | M24 | 20.11 | 24.7 | 32 |
| HWA-4028 | FKM | 2.0 | M28 | 25.0 | 28.7 | 37 |
| Part # | HWA-4028 |
|---|---|
| Size | N/A |
| Primary Material | Zinc-plated steel |
| Finish | Plain |
| Color | Natural |
| Thickness | 2.0mm |
| Outer Diameter (O.D.) | 37mm |
| Inner Diameter (I.D.) | 1.13" (28.7 mm) |
| Minimum Operating Temperature | -40°F (-40°C) |
| Maximum Operating Temperature | 302°F (150°C) |
| Brand | RaceFlux |
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