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Condition:
Factory New
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Learn more:
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MFR:
RPI
Ships from Manufacturer
- MPN: RXO086
- Phone: (800) 221-9723
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Frequently asked questions
Does this O-ring provide a reliable OEM fit?
Yes, the RPI RXO086 is specifically engineered as a precise replacement for OEM part #7700789. It is designed to ensure an exact fit for Matrx/Midmark PM-75 dental vacuum pumps, maintaining the integrity of your system.
Is the material durable enough for vacuum environments?
Absolutely. This O-ring is manufactured from high-quality Nitrile (Buna-N), a material chosen specifically for its:
- Excellent chemical resistance
- High durability in clinical environments
- Superior sealing performance under vacuum pressure
Does the hardness rating meet industry standards?
Yes, this component features a 70 durometer rating, which is the industry standard for ensuring optimal resistance and a tight, consistent seal in mechanical vacuum applications.
How many O-rings are included in the package?
Each order includes two O-rings. This convenient quantity is specifically provided to meet standard maintenance needs for your vacuum pump system.
Is this compatible with the VPE188 filter element?
Yes, this O-ring is an essential component that is included in the RPI Filter Element (Part #VPE188). It is highly recommended to replace these rings whenever you service or replace the filter to ensure a complete and effective seal.
What are the precise dimensions of this O-ring?
The RXO086 follows the AS568B-126 industry standard with the following measurements:
- ID: 1.362”
- OD: 1.568”
- C/S: .103”
Can I use these for professional dental equipment?
Yes, these are designed specifically for professional dental equipment maintenance, particularly for the Matrx/Midmark PM-75 dental vacuum units, ensuring they meet the high demands of clinical settings.
Is this a factory-new component?
Yes, the RPI RXO086 is a Factory New item, ensuring you receive a high-quality, reliable replacement part free from the wear and tear of refurbished or used alternatives.
Will these O-rings maintain their shape under pressure?
Yes, the Nitrile (Buna-N) construction is chosen for its resilience and flexibility. The uniform torus shape is engineered to maintain a consistent seal even under the continuous pressure environments found in dental vacuum pump assemblies.
Is technical support available if I have installation questions?
Yes, technical support is available to assist you with your equipment maintenance. You can reach their support team at (800) 221-9723 for expert guidance.

RPI RXO086 Industry Part #As568B-126