The Wacker Neuson O-Ring is a genuine OEM sealing component designed for the EHB 7 series electric demolition hammers, including the EHB 7M, EHB 7/115, and EHB 7/230 models. As a direct OEM part, the is manufactured to the exact material and dimensional specifications required for these SDS-max rotary demolition hammers. Verified fitment across the EHB 7 family means this O-Ring drops in without rework or adaptation. When an O-Ring in a demolition hammer wears or fails, the result is typically lubricant loss, contamination ingress, or pressure loss within the housing — replacing it promptly with the correct part keeps the tool performing at full capacity.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to the exact compound hardness and cross-section diameter specified for the EHB 7 hammer housing, ensuring a consistent compression seal under operating conditions.
- Direct-Fit Installation — Designed to seat into the original groove geometry of the EHB 7 series without stretching, shimming, or trimming.
- Broad EHB 7 Series Coverage — Confirmed fitment for the EHB 7M, EHB 7/115 (115V), and EHB 7/230 (230V) electric demolition and rotary hammers.
- Protects Internal Components — A properly seated O-Ring keeps lubricant contained within the gear housing and blocks dust and debris from entering — critical for sustained impact performance in concrete and masonry applications.
- Electrical Safety Relevance — In electric-powered tools, a failed internal seal can allow contaminants to reach live components; replacing a worn O-Ring with the correct OEM part supports safe tool operation.
An O-Ring in an electric demolition hammer serves as the primary barrier between the internal lubricated mechanism and the outside environment. It prevents grease from migrating out of the gear or chuck housing while simultaneously blocking fine concrete dust and moisture from working inward. When this seal degrades — through heat cycling, chemical exposure, or simple wear — the hammer may develop internal contamination that accelerates gear wear, increases friction in the drive mechanism, and ultimately causes the tool to lose striking force or seize. Replacing a worn O-Ring at the first sign of grease leakage or increased vibration is one of the most cost-effective preventive maintenance steps for any SDS-max rotary demolition hammer.
Part Details
| Part Number | 5000104191 |
|---|---|
| Old Part Number | 0104191 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Electric Drilling/Chisseling H ammer, SDS-max, 115V | EHB 7M | 5000007850 |
| Rotary Demolition Hammer | EHB 7/115 | 5000007706, 5000007974 |
| Electric Drilling/Chisseling H ammer, SDS-max, 115V | EHB 7/230 | 5000007973, 5000007980 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
