---
product_id: 508963177
title: "Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit (Buna 90 / BN90-180 Piece Kit)"
brand: "captain o-ring"
price: "2769506₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Captain O Ring"
url: https://www.desertcart.vn/products/508963177-captain-o-ring-ors-flat-face-hydraulic-o-ring-seal
store_origin: VN
region: Vietnam
---

# 8 versatile flat face sizes Buna 90 for low-temp sealing 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:** 2769506₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal your success with precision and confidence!

## 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?** 2769506₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/508963177-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

- • **Complete 180-Piece Kit:** All essential ORS flat face sizes in one sleek organizer for instant readiness.
- • **Perfect Fit Every Time:** Precision molded with zero flash for flawless sealing on ORS flat face hydraulic fittings.
- • **Trusted Industry Standard:** Manufactured and backed by decades of sealing expertise from Captain O-Ring LLC.
- • **Premium Buna Nitrile Material:** Durable 90 durometer o-rings engineered for superior resistance to hydraulic fluids and temperature extremes.
- • **Effortless Size Identification:** Clear size chart and shatterproof Flambeau case keep your workflow smooth and efficient.

## Overview

The Captain O-Ring ORS Flat Face Hydraulic O-Ring Seal Kit offers 180 high-quality Buna Nitrile (90 durometer) o-rings across 8 popular flat face sizes, designed specifically for ORS hydraulic fittings. Packaged in a durable, organized Flambeau case with a handy size chart, this kit ensures reliable, leak-proof sealing even in low temperatures. Manufactured by Captain O-Ring LLC, a trusted name with decades of industry experience, it’s the go-to solution for professionals demanding durability and precision.

## 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 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 86,865 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 230 in O-Rings |
| Colour | Black O-Rings |
| Customer Reviews | 4.7 4.7 out of 5 stars (360) |
| Date First Available | 2 Feb. 2016 |
| Item Package Quantity | 1 |
| Item Weight | 209 g |
| Item model number | ORSKIT-180pcBN90 |
| Manufacturer | Captain O-Ring LLC |
| Material | VITON 90 (255 Piece Kit) |
| 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 Details

- **Brand:** Captain O-Ring
- **Colour:** Black O-Rings
- **Manufacturer:** Captain O-Ring LLC
- **Material:** VITON 90 (255 Piece Kit)
- **Unit count:** 1.0 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 Vietnam*
*Store origin: VN*
*Last updated: 2026-02-23*