UAC O-ring for ultra lightweight blowback housing
No reward points for this product.
On a GBB, there are parts you see… and others that work in the shadows. This UAC anti-oil O-ring clearly belongs to the second category. Invisible once installed, but absolutely crucial for the proper functioning of your slide.
If you’ve ever experienced gas leaks, an inconsistent cycle or a “soft” shooting feel… there’s a good chance this small seal is the cause.
A sealing O-ring designed for perfect air seal
The role of this O-ring is simple: ensure optimal sealing at the blowback housing level.
And in a GBB, air seal is everything:
A clean cycle
Good responsiveness
Controlled gas consumption
This UAC model is specifically designed to limit the presence of oil where it shouldn’t be, while maintaining efficient compression.
Result: your slide operates more smoothly, more consistently… and clearly more reliably.
A must-have accessory for UAC blowback housings
This O-ring is designed to be used with UAC blowback housings, including the following references:
UAC-TM-00015
UAC-TM-00015-BK
UAC-TM-00068
UAC-TM-00070
In other words, if you’re running a Hi-Capa or custom GBB setup with UAC parts, this is exactly what you need.
And as often with this type of component, using the right seal makes all the difference between a “working” setup… and a truly optimized one.
Why replace your O-rings regularly?
Over time, O-rings wear out. They deform, lose elasticity… and your air seal suffers.
The signs are clear:
Power loss
Excessive gas consumption
Irregular cycling
Less crisp shooting feel
Replacing your O-rings gives your GBB a second life. And for such a low cost, the improvement is honestly impressive.
A practical pack to stay prepared
This kit includes 5 O-rings. And that’s far from a minor detail.
Why? Because seals are consumables. Having spares allows you to:
Anticipate wear
Perform regular maintenance
Avoid being stuck without parts
It’s exactly the kind of item you keep in your toolbox, ready when needed.
Installation requires proper handling
That said, this type of part requires some knowledge.
Disassembling and reassembling a GBB, especially around the blowback housing, requires a bit of experience. Incorrect installation can impact performance.
If you’re used to working on your replicas, no problem. Otherwise, going through an airsoft technician is a good option.
An invisible detail… but essential
Let’s be honest, it’s not the most “exciting” part to install. No flashy colors, no visual effect…
But on the field? The difference is real.
A well-sealed GBB means:
More consistency
Fewer losses
Cleaner shooting feel
And ultimately, a replica you can rely on.
What is an O-ring used for in a GBB?
It ensures sealing between different parts of the system, especially in the blowback housing, to guarantee proper operation.
Why choose an anti-oil model?
It limits the negative effects of excess oil while maintaining good compression and effective sealing.
Is this kit compatible with all GBBs?
No, it is designed for specific UAC blowback housings. Always check compatibility with your setup.
How many O-rings are included?
The kit contains 5 O-rings, allowing you to keep spares for maintenance.
When should an O-ring be replaced?
As soon as you notice gas leaks, performance drops or irregular cycling.
Is installation easy?
It requires intermediate knowledge of GBB disassembly. Careful installation is essential for optimal results.
