March 0135-0007-1000 O-Ring

March 0135-0007-1000 Buna-N Replacement O-Ring

The March 0135-0007-1000 is a Buna-N replacement O-ring designed for compatible March magnetic drive centrifugal pumps. This genuine manufacturer replacement component provides static sealing between pump housing surfaces, helping maintain fluid containment during normal operation.

Manufactured from Buna-N (nitrile rubber), the O-ring is identified in March parts documentation for several MDX Series configurations and AC Series pump models. It is intended for pump maintenance, housing reassembly and replacement of worn or damaged sealing components.

Key Features and Benefits

• Genuine March Replacement Part: Manufacturer part number 0135-0007-1000.
• Buna-N Construction: Nitrile rubber sealing material for compatible liquid-handling applications.
• Static Housing Seal: Helps prevent leakage at the pump housing joint when correctly installed.
• Model-Specific Fit: Listed for compatible March MDX and AC Series magnetic drive pumps.
• Maintenance Support: Suitable for replacing deteriorated, compressed or damaged O-rings during pump servicing.

Compatible March Pump Models

March Manufacturing identifies part number 0135-0007-1000 in the parts breakdown for the MDX-1/2, MDX-5/8, MDX-3-1/2 and MDX-3-5/8 magnetic drive pump configurations.

The same Buna-N O-ring is also listed for compatible AC-4C-MD and AC-4A-MD pump configurations. Compatibility should always be verified against the complete original pump model and manufacturer parts diagram.

Industrial Applications

This replacement O-ring supports maintenance of compatible March centrifugal pumps used in liquid circulation, water transfer and industrial process equipment. The suitability of Buna-N depends on the actual fluid, temperature and operating conditions.

Installation and Maintenance Guidance

Before installation, disconnect electrical power, isolate the pump and relieve system pressure. Remove the old O-ring and inspect the housing groove and mating surfaces for contamination or damage.

Install the replacement seal without twisting, stretching excessively or pinching the material. Reassemble the housing according to the March service instructions and inspect for leakage before returning the pump to operation.

Replacement and Ordering Information

Order using March part number 0135-0007-1000. This component is a replacement Buna-N O-ring, not a complete pump, impeller or wet end kit.

Some March pump variants use Viton, EPDM or other sealing materials instead. Confirm the original seal material and fluid compatibility before selecting this replacement.