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Pump Parts

Sundyne

Direct OEM replacementShips from Suzhou, China

A double cartridge seal built to drop straight into Sulzer® APP pumps, with no chamber modification. Supplied fully assembled and pressure-tested, ready to fit.

  • Suitable for Sulzer® APP pump
  • Sizes: 30, 40, 50, 60, 80, 90
  • Supports API Plans 52, 53A, 53B, 53C, 54
  • Can replace SE2 TB2
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Technical Documents
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At a glance

  • Type

    Double cartridge mechanical seal

  • Pump compatibility

    Sulzer® APP series

  • Sizes

    30.40·50.60-80.90

  • Piping plans

    API Plan 52,53A,53B,53C,54

  • Replaces

    SE2·TB2

  • Machining tolerance

    ±0.002 mm

  • Lead time

    Quoted per order - contact the engineering team

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Engineering Services

Built to Fit, First Time

Direct OEM replacements for John Crane, EagleBurgmann, AESSEAL & Flowserve. Precision-engineered, zero modification needed.

  • Dimensional Fidelity

    Every critical dimension is verified on a CMM against the assembly diagram before the seal is released for shipment.

  • Material Traceability

    Face and metal component materials are confirmed by spectrometer analysis, with records available per order.

  • Site Support Included

    Field engineers with 10–20 years of pump site experience are available for installation and commissioning.
FAQS

Frequently Asked Questions

Still have a question? Our field engineers reply within one business day.

How Fast Can You Deliver Replacement Parts?
Typical lead times run 4–8 weeks depending on material, casting method and machining complexity. Urgent repair work — like laser welding or shaft restoration — can be fast-tracked.
Can You Reverse-Engineer a Part from a Sample or Drawing?
Typical lead times run 4–8 weeks depending on material, casting method and machining complexity. Urgent repair work — like laser welding or shaft restoration — can be fast-tracked.
Which Materials Can You Cast and Machine?
Typical lead times run 4–8 weeks depending on material, casting method and machining complexity. Urgent repair work — like laser welding or shaft restoration — can be fast-tracked.
What Quality Documentation Do You Provide?
Typical lead times run 4–8 weeks depending on material, casting method and machining complexity. Urgent repair work — like laser welding or shaft restoration — can be fast-tracked.
Do You Handle Small Quantities or One-Off Prototypes?
Typical lead times run 4–8 weeks depending on material, casting method and machining complexity. Urgent repair work — like laser welding or shaft restoration — can be fast-tracked.
Let's build what matters
Let's Engineer the Future — Together.

Whether you need a single prototype or 10,000 precision-machined parts, our team is ready to help. Contact us today for a quote or technical consultation.

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