---
product_id: 733237249
title: "Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit)"
brand: "captain o-ring"
price: "€ 10458.29"
currency: EUR
in_stock: true
reviews_count: 5
category: "Captain O Ring"
url: https://www.desertcart.gr/products/733237249-captain-o-ring-boss-hydraulic-sae-900-o-ring-seal
store_origin: GR
region: Greece
---

# Organized compartment case -40°F to 250°F temp range 255 precision O-rings Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit)

**Brand:** captain o-ring
**Price:** € 10458.29
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal like a boss — never let a leak slow your flow!

## Quick Answers

- **What is this?** Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) by captain o-ring
- **How much does it cost?** € 10458.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/733237249-captain-o-ring-boss-hydraulic-sae-900-o-ring-seal)

## Best For

- captain o-ring enthusiasts

## Why This Product

- Trusted captain o-ring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Compatibility:** Perfectly designed for sealing straight thread tube fittings in hydraulic systems, making it the go-to kit for professionals.
- • **Built to Withstand Extremes:** Engineered for durability with a wide service temperature range from -40°F to 250°F, ensuring reliable sealing under harsh conditions.
- • **Complete Hydraulic Seal Solution:** 255 premium Buna-N 70 durometer O-rings covering all common BOSS/ORB sizes from -904 to -916.
- • **Effortless Organization & Access:** Smartly sorted in a sturdy, compartmentalized case with an included size chart for quick identification and zero downtime.
- • **Trusted Quality, Made in the USA:** Manufactured and backed by Captain O-Ring LLC, guaranteeing consistent performance and peace of mind.

## Overview

The Captain O-Ring BOSS Hydraulic SAE 900 Seal Kit offers 255 high-quality Buna-N 70 durometer O-rings in all essential BOSS/ORB sizes, designed for hydraulic fittings. With a robust temperature tolerance from -40°F to 250°F and a durable, compartmentalized case, this USA-assembled kit ensures professional-grade sealing performance and effortless organization for maintenance pros.

## Description

desertcart.co.jp: Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) : Computers

Review: 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.
Review: 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.

## Features

- Includes high quality BN70 (Buna Nitrile 70 durometer) o-rings - the most common o-ring material for hydraulic ORB/BOSS fittings due to it’s excellent sealing ability and resistance to oils and hydraulic fluid. Service temperature of -40F to 250F.
- Includes all 12 BOSS/ORB o-ring sizes between -904 to -916. 255 total o-rings.
- Used in sealing straight thread tube fittings (ORB / O-Ring Boss Type) in hydraulic equipment
- O-Rings are conveniently sorted by size in individual compartments within the divider box with a convenient o-ring size chart included on the kit to quickly and easily size up and identify the o-ring you need.
- Manufactured and Warrantied by Captain O-Ring LLC. Proudly assembled in the USA!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01BE5J23K |
| Batteries Included | No |
| Batteries Required? | No |
| Customer Reviews | 4.6 4.6 out of 5 stars (166) |
| Date First Available | March 6, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 228 g |
| Material | 合成ゴム |
| Number Of Pieces | 255 |
| Package Dimensions | 22.9 x 12.5 x 3.5 cm; 228 g |
| Part number | BOSSKIT-255pcBN70 |
| Temperature Range | 2.5E+2 華氏 |

## Product Details

- **Brand:** Captain O-Ring
- **Material:** 合成ゴム
- **Temperature Range:** 2.5E+2 華氏
- **UPC:** 722589526572
- **Unit Count:** 1.0 Count

## Images

![Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) - Image 1](https://m.media-amazon.com/images/I/41BjeQP7VHL.jpg)
![Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) - Image 2](https://m.media-amazon.com/images/I/41SGOqrEUoL.jpg)
![Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) - Image 3](https://m.media-amazon.com/images/I/41T6lqI7jvL.jpg)
![Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) - Image 4](https://m.media-amazon.com/images/I/41begCR0mFL.jpg)
![Captain O-Ring BOSS Hydraulic SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit) - Image 5](https://m.media-amazon.com/images/I/41g8Q2RTMML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***6 on June 6, 2021*

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.

### ⭐⭐⭐⭐⭐ Review
*by T***C on February 3, 2020*

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.

### ⭐⭐⭐⭐ Review
*by J***N on December 5, 2025*

decent selection

## Frequently Bought Together

- Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit, 12 Sizes)
- Captain O-Ring ORS/ORFS (for Flat Face Fittings) Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit)
- Captain O-Ring Flange Seal (SAE Code 61/62) Hydraulic O-Ring Seal Kit (Buna 90 / BN90-55 Piece Kit)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-26*