Tsurumi 30mm Double Mechanical Seal — H-30 / 025-194-12

Direct-fit aftermarket Tsurumi 30mm double mechanical seal (upper + lower) for submersible pump applications using a 30 mm shaft. This seal is commonly referenced as Tsurumi H-30 and Tsurumi OEM 025-194-12, making it easy to match manuals, invoices, and old seal packaging. Supplied with 44 × 57 stationary seats to achieve proper fit in the seal housing on listed applications. Compatible with Tsurumi 100C43.7-CR63—ideal for submersible duty where reliable sealing and long service life are required.

At a glance:

• Shaft size: 30 mm

• Configuration: Double seal (upper + lower)

• Seat size: 44 × 57 (verify against your housing bore)

• Form: Seal assembly only (O-rings/gaskets sold separately)

Compatibility / Cross-reference:

• Compatibility: Tsurumi 100C43.7-CR63

• Cross-ref: H-30 / 025-194-12

Explore our full line up of OEM seals 

Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

Have questions? Call us anytime- we’re here to help