The Udor 0007.61 D35 Oil Seal is an OEM replacement crankshaft seal for compatible Udor diaphragm pumps. It is installed at the crankshaft/bearing-flange area of the pump and provides the seal between the rotating shaft and crankcase.

Maintaining this seal is important because Udor diaphragm pumps depend on crankcase oil to lubricate the crankshaft, bearings, connecting rods, and other internal components. A worn or damaged oil seal can allow lubricant to escape from the crankcase and may allow external contamination to enter.

Udor's newer parts documentation identifies this component as 0007.61 – OIL SEAL D35. Older Udor parts breakdowns identify the same seal location as 0007.05 – Seal, making the old number important for customers maintaining older pumps or working from legacy Udor manuals

Fitment

The 0007.61 / former 0007.05 D35 oil seal has broad Udor diaphragm-pump usage. Verified applications include the following pump families.

Udor KAPPA Series

• KAPPA 33
• KAPPA 43
• KAPPA 53

Older KAPPA 33/43/53 documentation lists the seal as 0007.05, while current KAPPA 43 documentation lists 0007.61 OIL SEAL D35, demonstrating the part-number transition.

Udor ZETA Series

Verified current applications include:

• ZETA 40
• ZETA 40 VA
• ZETA 40 GR
• ZETA 85
• ZETA 85 VA
• ZETA 85 GR
• ZETA 85P / related configurations
• ZETA 120

Current Udor ZETA 40, ZETA 85 and ZETA 120 breakdowns specifically identify 0007.61 as the D35 oil seal.

Udor RO Series / Legacy Applications

Older Udor documentation confirms 0007.05 in the same crankshaft-seal application on:

• RO-110/C
• RO-130/C

These legacy applications are important to include because owners may search for the seal using the old 0007.05 number shown in their original parts manuals.

Udor DELTA Series

Current Udor documentation also specifies 0007.61 OIL SEAL D35 for:

• DELTA 40
• DELTA 40 GR3/4

The current DELTA 40 breakdown calls for one 0007.61 seal.

Additional D35 Applications

Udor's current diaphragm-pump reference documentation shows 0007.61 in additional D35 crankshaft-seal configurations, so this part has broader application than one individual pump family. Always check the pump's exploded parts diagram before ordering to ensure proper fitment.