---
product_id: 680678906
title: "Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit)"
brand: "captain o-ring"
price: "$U4999"
currency: UYU
in_stock: true
reviews_count: 5
category: "Captain O Ring"
url: https://www.desertcart.uy/products/680678906-captain-o-ring-ors-flat-face-hydraulic-o-ring-seal
store_origin: UY
region: Uruguay
---

# 8 versatile sizes Durable Buna Nitrile 90 durometer 180 precision o-rings Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit)

**Brand:** captain o-ring
**Price:** $U4999
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) by captain o-ring
- **How much does it cost?** $U4999 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/680678906-captain-o-ring-ors-flat-face-hydraulic-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

- • **Built to Last:** High-durability synthetic rubber resists hydraulic fluids & low temps
- • **Complete Seal Mastery:** 180 premium Buna90 o-rings for flawless hydraulic sealing
- • **Organized for Efficiency:** Shatterproof Flambeau case with size chart for quick, hassle-free access
- • **Trusted Industry Standard:** Backed by decades of Captain O-Ring expertise and 1-year warranty
- • **Size Flexibility On-Demand:** 8 essential flat face sizes covering all your ORS fitting needs

## Overview

The Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit offers 180 high-quality Buna Nitrile (90 durometer) o-rings in 8 popular flat face sizes, designed specifically for ORS hydraulic fittings. Packaged in a durable, organized Flambeau case with a sizing chart, this kit ensures reliable sealing performance, chemical resistance, and flexibility in low temperatures. Manufactured by Captain O-Ring LLC, a trusted name with decades of industry experience, it comes with a 1-year warranty for peace of mind.

## Description

Captain O-Ring's 180 Piece ORS Hydraulic Buna90 (BN90) O-Ring Kit includes 8 sizes and 180 total o-rings. The kit includes #4 (1/4" Flat Face), #6 (3/8" Flat Face), #8 (1/2" Flat Face), #10 (5/8" Flat Face), #12 (3/4" Flat Face), #16 (1" Flat Face), #20 (1-1/4" Flat Face), and #24 (1-1/2" Flat Face) o-rings. This kit contains o-rings made of Buna Nitrile (90 durometer) material, also known as BN90 or NBR90. Buna 90 is a common material used in ORS Flat Face seal applications due to its resistance to many hydraulic fluids and its flexability/sealability in low temperatures. The included size chart on the front of the kit makes sizing up o-rings quick and effortless. O-Rings are conveniently sorted by size in a shatterproof Flambeau divider box. What to expect: This item includes 180 O-Rings in a Flambeau plastic divider case with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC. Note: These are round o-rings used in ORS Flat Face Fittings. The o-rings themselves are round and not flat.

Review: Awesome quality
Review: A handy set of o-rings to have when working on any hydraulic equipment with ORFS fittings. The o-rings are the correct size and well made with no flash at the mold parting line. They work just like they should.

## Features

- Includes high quality Buna Nitrile (90 durometer) o-rings
- Includes #4 (1/4" Flat Face), #6 (3/8" Flat Face), #8 (1/2" Flat Face), #10 (5/8" Flat Face), #12 (3/4" Flat Face), #16 (1" Flat Face), #20 (1-1/4" Flat Face), and #24 (1-1/2" Flat Face) o-rings
- Used in sealing ORS Flat Face Hydraulic Fittings in hydraulic equipment
- Manufactured and Warrantied by Captain O-Ring LLC, with decades in a sealing and chemical industry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B8WN9QS |
| ASIN  | B07B8WN9QS |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Black O-Rings |
| Customer Reviews | 4.7 4.7 out of 5 stars (360) |
| Customer reviews | 4.7 4.7 out of 5 stars (360) |
| Date First Available | 2 February 2016 |
| Date First Available  | 2 February 2016 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 209 g |
| Item model number | ORSKIT-180pcBN90 |
| Item model number  | ORSKIT-180pcBN90 |
| Manufacturer | Captain O-Ring LLC |
| Manufacturer  | Captain O-Ring LLC |
| Material | Synthetic Rubber |
| Measurement System | Inch |
| Number Of Pieces | 180 |
| Part number | ORSKIT-180pcBN90 |
| Product Dimensions | 22.86 x 12.7 x 3.81 cm; 209 g |
| Product Dimensions  | 22.86 x 12.7 x 3.81 cm; 209 g |

## Product Details

- **Brand:** Captain O-Ring
- **Colour:** Black O-Rings
- **Manufacturer:** Captain O-Ring LLC
- **Material:** Synthetic Rubber
- **Unit count:** 1 Count

## Images

![Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) - Image 1](https://m.media-amazon.com/images/I/71BuhzkKEYL.jpg)
![Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) - Image 2](https://m.media-amazon.com/images/I/71T85CvgetL.jpg)
![Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) - Image 3](https://m.media-amazon.com/images/I/71+S3ev6UXL.jpg)
![Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) - Image 4](https://m.media-amazon.com/images/I/71CtzBqO8SL.jpg)
![Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit) - Image 5](https://m.media-amazon.com/images/I/718nMSVfJDL.jpg)

## Questions & Answers

**Q: Hi, I have a corbin series 100 hydraulic door closer that leaks oil from the arm spindle, can I use this o-rings to reseal it?**
A: Hello.  If that device uses ORS/ORFS hydraulic fittings, then this would work for it.  You may be able to look in the product's manual for information on the o-rings.  Feel free to contact Captain O-Ring directly if you're able to find a part number or specs in the manual.  We'd be happy to help with it.

**Q: Is the width of these O-rings 0.07 inches?**
A: Hello.  Yes, that is the standard cross section (width) for ORS/ORFS o-rings.  :-)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***T on 14 May 2025*

Awesome quality

### ⭐⭐⭐⭐⭐ Review
*by A***R on 22 June 2024*

A handy set of o-rings to have when working on any hydraulic equipment with ORFS fittings. The o-rings are the correct size and well made with no flash at the mold parting line. They work just like they should.

### ⭐⭐⭐⭐⭐ Review
*by F***N on 10 January 2026*

No more running to the store it’s at my mechanic finger tips as needed

## Frequently Bought Together

- Captain O-Ring ORS/ORFS (for Flat Face Fittings) Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit)
- Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit, 12 Sizes)
- XBVV 1540 Pcs 32 Size O-Rings Kit Nitrile Rubber O Ring Assortment with 4 Hook Set for Various Car Auto Vehicle Repair Plumbing Pressure Washer Air or Gas Sealing Connections Resist Oil and Heat

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-12*