🔧 Seal like a boss — never let a leak slow your flow!
The Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit offers 255 high-grade Buna-N (BN70) o-rings in 12 sizes, designed specifically for hydraulic ORB/BOSS fittings. With a wide temperature tolerance from -40°F to 250°F and a durable, organized Flambeau case, this kit ensures quick, reliable sealing solutions for professionals. Proudly made in the USA and backed by a 1-year warranty, it’s the ultimate cost-effective choice for maintaining hydraulic systems with confidence.
| ASIN | B01BE5J23K |
| Best Sellers Rank | #265,749 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #370 in Faucet O-Rings |
| Brand Name | Captain O-Ring |
| Color | Black |
| Customer Reviews | 4.7 out of 5 stars 172 Reviews |
| Manufacturer | Captain O-Ring LLC |
| Material | Synthetic Rubber |
| Material Type | Synthetic Rubber |
| Model | BOSS255-BN70 |
| Number of Items | 1 |
| Number of Pieces | 255 |
| Part Number | BOSSKIT-255pcBN70 |
| Temperature Range | 2.5E+2 Degrees Fahrenheit |
| UPC | 722589526572 |
| Unit Count | 255 Count |
C**N
Great alternative for spending a ton more at a local hydraulic shop.
Exactly what I needed for ORB hydraulics. As others have mentioned the case is great quality compared to others.
R**H
X
X
J**N
recommend
decent selection
M**N
Good variety
Good selection at a reasonable price. Haven't had much use thus far but it's good knowing there's a stock of various o-rings onhand if anything arises.
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.
Trustpilot
2 weeks ago
2 months ago