Datasheet · ISPL 2428
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Pump seals
ISPL 2428 Balanced Wave Spring Seal
ISPL 2428 is a balanced single wave spring seal whose body locks onto the shaft and doubles as the sleeve, so the shaft needs no change. The springs sit inside the body, out of the product, for viscous fluids and fluids with solids.
- Type
- Single, balanced
- Rotation
- Bi-directional
- Shaft size
- 25–100 mm0.98–3.94 in
- Pressure
- up to 20 kg/cm²≤ 20 kg/cm²up to 284 psi≤ 284 psi
- Temperature
- up to 100 °C≤ 100 °Cup to 212 °F≤ 212 °F
- Spring
- Wave, protected

Datasheet
Specifications
| Parameter | Limit | Unit | Copy |
|---|---|---|---|
| Shaft diameter | 25–1000.98–3.94 mmin | mmin | |
| Pressure | up to 20≤ 20up to 284≤ 284 kg/cm²psi | kg/cm²psi | |
| Temperature | up to 100≤ 100up to 212≤ 212 °C°F | °C°F | |
| Surface speed | up to [0.0]≤ [0.0] m/sft/s | m/sft/s | |
| Rotation | Bi-directional | – |
| Part | Options | Copy |
|---|---|---|
| 1 · Seal faces | [Face combinations] | |
| 2 · Springs | [Grade] | |
| 3 · Secondary seals | [Elastomer and PTFE options][Elastomer options] | |
| 4 · Gland plate | [Grade] | |
| 5 · Sleeve and other metal partsSleeve, metal parts | [Grades] |
Applications
Where it's used
Equipment
- Pumps for highly viscous fluids
- Pumps for fluids with solid particles
Pumps for highly viscous fluids and pumps for fluids with solid particles.
Design
Design features
-
Built-in sleeve
Balanced with no change to the shaft.
-
Protected springs
Inside the body, behind the rotary ring.
-
Drop-in
Replaces most seals without modification.
-
Either direction
Independent of the direction of rotation.
Files
Downloads
Datasheets open without a form. Drawings are sent on request.
FAQ
Questions buyers ask
Do I need to change the shaft?
No. The built-in sleeve makes it a balanced seal without any change to the shaft.
What do you need from me to quote?
Shaft size, speed, temperature, pressure and the fluid. A photo of the old seal or its nameplate helps.
How long does delivery take?
After order confirmation: 2 days from stock, 2 weeks for a new seal.
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