---
product_id: 634242490
title: "Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer"
brand: "beaver island parts company"
price: "989 zł"
currency: PLN
in_stock: false
reviews_count: 5
category: "Beaver Island Parts Company"
url: https://www.desertcart.pl/products/634242490-hydraulic-o-ring-kit-boss-orb-fittings-245-pieces-12
store_origin: PL
region: Poland
---

# 12 common BOSS ORB sizes included Heat resistant up to 212°F 245-piece comprehensive kit Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer

**Brand:** beaver island parts company
**Price:** 989 zł
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Seal like a pro, leak like never before!

## Quick Answers

- **What is this?** Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer by beaver island parts company
- **How much does it cost?** 989 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/634242490-hydraulic-o-ring-kit-boss-orb-fittings-245-pieces-12)

## Best For

- beaver island parts company enthusiasts

## Why This Product

- Trusted beaver island parts company brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly USA-Made:** Assembled by Beaver Island Parts Company, a trusted small business with decades of expertise
- • **Organized On-the-Go:** Multi-compartment case with printed sizing chart fits perfectly in your toolbox or vehicle
- • **Engineered for Endurance:** Heat resistant up to 212°F with superior oil, weather, and tear resistance
- • **Precision Fit Every Time:** Includes 12 most common BOSS ORB sizes for seamless compatibility with top hydraulic brands
- • **Ultimate Seal Confidence:** 245 premium Buna-N 90 Durometer O-rings for high-pressure hydraulic reliability

## Overview

This 245-piece Hydraulic O-Ring Kit features high-quality Buna-N 90 Durometer synthetic rubber O-rings designed for superior oil, heat (up to 212°F), and weather resistance. It includes 12 of the most common BOSS ORB sizes, ideal for high-pressure hydraulic fittings used in pumps, cylinders, and valves. Packaged in a durable, compartmentalized case with a sizing chart, this USA-assembled kit ensures professional-grade sealing and convenient organization for maintenance pros and hydraulic specialists.

## Description

The Kit Includes the Following O-Rings in Buna-N 90 Durometer:35 - Dash 4 (#904)30 - Dash 5 (#905)30 - Dash 6 (#906)20 - Dash 7 (#907)20 - Dash 8 (#908)20 - Dash 9 (#909)15 - Dash 10 (#910)15 - Dash 11 (#911)15 - Dash 12 (#912)15 - Dash 13 (#913)15 - Dash 14 (#914)15 - Dash 16 (#916)All Conveniently Packaged in a Multi-Compartment Plastic Carrying Case - Complete with an Easy to Use Sizing Chart.This kit is assembled in the USA by Beaver Island Parts Company.An o-ring boss seal is a technique for joining two fluid-carrying pipes, hoses, or tubing. In an o-ring boss (abbreviated ORB) system, a male-threaded part is inserted into a female-threaded part, providing a mechanical seal. The female port has a straight thread and a machined surface to provide a smooth, flat, accurately located surface (minimum spotface), along with a chamfer where the O-ring seats. The seal is created when the O-ring is compressed into the chamfer when mating the male and female connection providing a leak-tight seal.This system is used frequently in hydraulics, although it has been applied to other systems including compressed air systems and vacuum pumps.All elements of this listing are the intellectual property of Beaver Island Parts Company. Beaver Island Parts Company LLC is not liable for any damages or injury resulting from the misuse of this product. Packaging may vary slightly in appearance.

Review: Both of these kits are great quality and offer exactly what sizes I need that the generic oring kits don’t offer.
Review: great product

## Features

- High Quality Buna-N 90 Durometer Material (Also Known as Nitrile or NBR) has Excellent Oil Resistance, as well as Superior Resistance to Weather and Tearing. Buna-N Nitrile O-rings in 90 Durometer are Heat Resistant up to 212F and 250F Intermittent to -30F. 90 Durometer O-rings have a Harder and Denser Consistency and are Typically Used in Higher Pressure Applications
- 12 of the Most Common Sizes of BOSS (ORB) O Rings are Included – a Total of 245 O-Rings. An Excellent Value
- Used for Sealing Straight Thread Tube Fittings (BOSS Type) in Hydraulic Equipment. Boss Tube Fittings are Frequently used in Hydraulic Fittings, Hydraulic Pumping, Pneumatic Motors, Cylinders, Pumps, and Valves
- A Convenient Sizing Chart is Printed on the Inside of the Case for Easy Identification and Selection. The Carrying Case Features a Multiple Compartment Design for Segmented Storage. Perfectly Sized for Storage in a Tool Box or Vehicle.
- Assembled in the USA by Beaver Island Parts Company. A Small Business with Multiple Decades of Experience in the Industry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8F16862 |
| Are batteries included? | No |
| Brand | Beaver Island Parts Company |
| Colour | Black |
| Country of Origin | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars (69) |
| Date First Available | 17 March 2023 |
| Item Weight | 191 g |
| Item model number | ORB BOSS O-RING KIT 90 DURO |
| Manufacturer | Beaver Island Parts Company |
| Material | Synthetic Rubber |
| Model number | ORB BOSS O-RING KIT 90 DURO |
| Net Quantity | 245.0 Count |
| Nominal Inside Diameter | Various Inches |
| Nominal Outside Diameter | Various Inches |
| Number of Memory Sticks | 1 |
| Number of Pieces | 245 |
| Package Dimensions | 19.51 x 15.01 x 3.91 cm; 190.51 g |
| Special Feature | Buna-N 90 Durometer, Compatible with BOSS ORB Hydraulic Fittings, Compatible with Caterpillar (CAT), John Deere, Timberjack and many others, Convenient O-Ring Kit |

## Product Details

- **Brand:** Beaver Island Parts Company
- **Colour:** Black
- **Material:** Synthetic Rubber
- **Nominal Inside Diameter:** Various Inches
- **Nominal Outside Diameter:** Various Inches

## Images

![Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer - Image 1](https://m.media-amazon.com/images/I/21+Z3F0exQL.jpg)
![Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer - Image 2](https://m.media-amazon.com/images/I/416AEex7oOL.jpg)
![Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer - Image 3](https://m.media-amazon.com/images/I/41JvYIU9eFL.jpg)
![Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer - Image 4](https://m.media-amazon.com/images/I/41QbuDZEoNL.jpg)
![Hydraulic O-Ring Kit BOSS ORB Fittings 245 Pieces (12 Common Sizes) SAE 900 Series Buna-N 90 Durometer - Image 5](https://m.media-amazon.com/images/I/511oASaU5BL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***T on 14 February 2025*

Both of these kits are great quality and offer exactly what sizes I need that the generic oring kits don’t offer.

### ⭐⭐⭐⭐⭐ Review
*by A***S on 31 January 2025*

great product

### ⭐⭐⭐⭐⭐ Review
*by A***R on 17 July 2025*

Just what I needed

## Frequently Bought Together

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-23*