Captain O-Ring - Benjamin & Air Force PCP Hand Pump ORing Rebuild Kit (Polyurethane Piston O-Ring Upgrade)

Worked perfect for rebuilding my Benjamin PCP hand pump. Definitely watch the YouTube videos for using these.

I completely rebuilt my benjamin pump with the o-ring kit and a little silicone grease. The exploded diagram on their website made it a breeze. Now it works like new! It probably helped that during the process I cleaned out two years of accumulated oily gunk before I rebuilt it. But I am completely satisfied with the rings, and the next time the pump fails (as the high air pressures and heat generated guarantee) I'll purchase another kit from Captain O-Ring.

Fairly easy to install once you break free some of the factory tightened fittings. Bought my Benjamin handpump back to life. Use the diagram available on their website to to help with the installation of the o-rings.

This o-ring kit rescued my broken PCP pump! The quality is good and I appreciate the fact that all o-rings are included to completely rebuild the pump. My only concern is that you need to download the sizing guide/instructions from the website - not really a big deal, but just one extra thing you need to do to prepare for the job. If this is your first time doing the job be sure to watch the various videos out there on the Internet. There are a lot of steps that need to be performed! (Nothing exceptionally difficult, but lots of steps - I'm surprised how complicated the pump is internally!)

This was purchased in the event a rebuilt of my newly acquired Benjamin hand pump is required in the future. Hence I have yet to use the product. A printable installation guide is available on the company's web site, which is excellent for those who have never executed a rebuilt on their hand pump. Take note, the picture of the product provided identifies 12 o-rings, however in the package received there were only 11, hence the three star rating. The most important seals were received however.

O-ring kit was as expected. Great purchase. Only complaint is it's only 1 set of o-rings. Would of been nice to get 2 sets with the kit. But over all I'm happy with the purchase.

I am very pleased with the speed of delivery and the overall ease and quality of these seals. The installation was a breeze as there is a downloadable guide available on the website. Would definitely purchase again if I ever need it...

2 pcs of plastic