












🔧 Seal your success with precision and confidence!
The Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit features 255 high-quality Buna-N 70 durometer O-rings in 12 common BOSS/ORB sizes, designed for superior sealing in hydraulic fittings. With a robust temperature range of -40°F to 250°F and a durable, organized case, this USA-made kit ensures professional-grade reliability and convenience for hydraulic maintenance and repairs.




| ASIN | B01BE5J23K |
| Best Sellers Rank | #56,647 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #121 in O-Rings |
| Brand | Captain O-Ring |
| Date First Available | February 2, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | BOSS255-BN70 |
| Manufacturer | Captain O-Ring LLC |
| Material | Buna-N Rubber |
| Number of Pieces | 255 |
| Package Dimensions | 9.02 x 4.92 x 1.38 inches |
| Set Name | 255 Piece ORB / BOSS Hydraulic BN70 O-Ring Kit |
| Temperature Range | 2.5E+2 Degrees Fahrenheit |
| UPC | 722589526572 |
| Unit Count | 1 Count |
D**6
Nice set!
Nice set of o-rings in an awesome case. That's usually the problem with these kits, the case is junk and falls apart and your stuff ends up on the ground. Not this kit. Has all the common sizes and feel like quality o-rings.
T**C
Great assortment
Great set, fit very well and I guess only time will tell how long they last. Large assortment of sizes and all fit my machine so far. Great value for the price. Case is nice to keep them organized and it is not flimsy.
J**N
recommend
decent selection
W**N
Great seller
Great product
T**Y
They fit!
I have HF's SAE and metric kits, and the boxes are mostly full. Why? because they don't fit anything. They are close but I think manufacturers deliberately make "O" rings that can't be replaced by any in these kits, LOL. I needed ORB "O" rings for hydraulic fittings I just had hoses, made for and the Captain -O-Ring kit fit and worked great, with NO leaks. I am happy.
H**E
Excellent o rings
High quality o rings. I have not had any deterioration in them when used in my tractors hydraulics
R**Y
Great Product
TRactor
D**M
Transmission
My transmission had stopped working on my tractor and I used your o ring to fix it like new. 😁
Trustpilot
Hace 2 semanas
Hace 2 meses