DAB K30/100 Mechanical Seal

The mechanical seal that fits the DAB K30/100 is a 15 mm shaft seal with carbon / ceramic faces, replacing DAB seal number 100M/16. This CapacitorsNZ seal is also listed for other DAB K-series models such as the K30/70 and K36/100, and for the DP151. Measure the shaft or compare your old seal with the photos before fitting it.

DAB K30/100 seal specifications

A mechanical seal has two halves. A spring-loaded rotating head rides on the pump shaft, and a stationary seat is pressed into the pump body. The two lapped faces run against each other on a thin film of water, which is what stops the pump leaking along the shaft. This seal is also sold on its own as our 15 mm mechanical seal to suit DAB K-series pumps.

• Shaft size: 15 mm.
• Faces: carbon / ceramic.
• Replaces: DAB 100M/16.

Other pumps that take the 100M/16 seal

These DAB models are listed with the same 100M/16 replacement seal and have their own pages: DAB DP151, DAB K12/200, DAB K14/400, DAB K30/70, DAB K35/40, DAB K36/100, DAB K45/50 and DAB K55/50.

The same seal is also listed for the DAB DP100, KH35/100 and KH40/100, the Davies JET Series 2.0-3.0Hp, K Series 1.5Hp and KA Series 1.5-2.0Hp, the Ebara 2CDX, CD, CDX, JE and JEX, the Grundfos JPF4, JPF5 and JPF7, the Onga OCS 401-405, and the Pentax CAB, CM150, CM200, CM300, TE and TF-JET. Pump versions vary, so always compare against your old seal.

Signs the K30/100 seal is worn

Change the seal as soon as it starts to weep. Water running along the shaft into the motor end is a common way pump bearings get ruined, which turns a seal job into a motor repair. If you are unsure the seal is the culprit, send us a photo of the leak and the pump label. Seals for other DAB pumps are under DAB service kits.

• Water dripping from the gap between the pump casing and the motor.
• A damp patch, white crust or rust streak under the motor.
• On a pressure system, the pump cycling on and off with every tap closed, which can point to a leak, and a weeping seal is one possible cause.

Before you order

Check the old part before fitting: match the size of your old seal.

What seal fits a DAB K30/100?

The DAB K30/100 takes a 15 mm shaft mechanical seal with carbon / ceramic faces. Our CapacitorsNZ seal is a replacement for DAB 100M/16.

What is the DAB part number for the K30/100 seal?

The DAB seal number listed for the K30/100 is 100M/16, and this seal is a replacement for it.

Does the DAB K30/70 use the same seal as the K30/100?

Yes, the DAB K30/70 is listed with the same 15 mm 100M/16 replacement seal as the K30/100. Check your old seal to be sure, as pump versions vary.

Which other pumps use the same seal as the DAB K30/100?

The 15 mm 100M/16 replacement seal for the DAB K30/100 is also listed for the DAB DP151, K12/200, K14/400, K30/70, K35/40, K36/100, K45/50 and K55/50, plus several Davies, Ebara, Grundfos JPF, Onga and Pentax models. Always compare against your old seal, as pump versions vary.

Can I replace just the seal on a K30/100?

Yes. The DAB K30/100 seal is sold on its own, or in the K30/100 service kit with a run capacitor if you want to do both in one job.

How do I check the seal size on my K30/100?

Measure the shaft diameter where the seal sits; it should be 15 mm for the DAB K30/100. You can also compare the old seal face-to-face with the product photos.

What if it doesn't fit?

If you're unsure, send us a photo of your old part and the pump's label before ordering.