Rubber Seals and O-Rings
HNBR O-Rings and Seals
HNBR O-rings and seals in hydrogenated nitrile, used predominantly for cold medium sealing where the material's composition keeps it performing at low temperature.
Product Overview
HNBR O-rings and seals in hydrogenated nitrile, used predominantly for cold medium sealing where the material's composition keeps it performing at low temperature. In automotive work it is used on power steering pipes and oil seals, and beyond automotive it is found in packer and screw pumps and in O-ring applications generally.
Key benefits
Why Buyers Choose This Specification
Performs in Cold Media
HNBR is predominantly used for cold medium sealing, where standard nitrile stiffens and loses sealing contact. That is the specific reason to pay more for it.
Automotive Proven
Power steering pipes and automotive oil seals are named applications, both of which see temperature cycling and pressure in the same duty.
Suited to Pump Service
Packer and screw pumps are named applications, where the seal sees both abrasion and chemical exposure.
Hydrogenation Improves the Backbone
Hydrogenating nitrile removes the double bonds that make standard NBR vulnerable to heat and ozone, without losing its oil resistance.
Application scenarios
Where It Is Used
- Power steering pipe sealing in vehicles
- Automotive oil seals
- Cold medium sealing applications
- Packer pumps in oilfield service
- Screw pump sealing
- General O-ring applications requiring HNBR properties
Who it is for
The Buyers This Product Suits
Automotive Suppliers
Power steering pipes and oil seals are the named automotive applications for HNBR.
Pump Manufacturers
Packer and screw pumps are named applications for HNBR seals.
Operations in Cold Conditions
Cold medium sealing is the primary use case for this material.
Problems it solves
What It Fixes
Standard Nitrile Stiffening in the Cold
HNBR is predominantly used for cold medium sealing precisely because its composition holds performance in colder environments.
Seal Failure in Power Steering Systems
HNBR is the material used on power steering pipes, where pressure and temperature cycling are constant.
Pump Seals in Demanding Service
Packer and screw pump applications are within the intended range for this material.
Specifications
Published Figures For This Product
Every value below comes from our own product specification. Where a figure is not published we leave it out rather than estimating it.
| Material | HNBR hydrogenated nitrile |
|---|---|
| Primary Use | Cold medium sealing |
| Automotive Applications | Power steering pipes, automotive oil seals |
| Industrial Applications | Packer and screw pumps, O-ring applications |
| Sizing | By inside diameter and cross-section |
| Grade | Hydrogenated nitrile |
Packing and documents
How It Ships And What Comes With It
Packing And Loading
Shipping volume for this item depends on the configuration and capacity you select, so no fixed container figure is published. Confirm the specification and the destination and a loading plan is issued with the quotation, rather than a figure we cannot support.
Documentation On File
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
Sourcing And Inspection
This product is supplied through TrueGlow Imaging, working with manufacturing partners whose facilities are visited and verified rather than taken on trust. In-process quality control and delivery supervision are available so goods are inspected before the container is sealed. Certifications quoted on this page are those stated on the product specification and belong to that product range rather than to our trading entity, so ask for the certificate covering your specific item.
Handling guide
Getting It Right First Time
Step 1
Specify HNBR where the application is cold and standard nitrile would stiffen.
Step 2
Confirm the fluid chemistry as well as the temperature before selecting.
Step 3
Measure inside diameter and cross-section for replacement seals.
Step 4
Store seals away from ozone sources such as electric motors.
Step 5
Replace rather than reuse seals after disassembly.
Comparison
How It Compares In Our Range
HNBR against the other nitrile-family options.
| HNBR Seals | Hydrogenated nitrile, predominantly for cold medium sealing. Automotive power steering and oil seals, packer and screw pumps. |
|---|---|
| NBR O-Ring | Standard nitrile with good oil resistance at lower cost, in a narrower temperature range. |
FAQ
HNBR O-Rings and Seals Questions
What is HNBR used for?
It is predominantly used for cold medium sealing, where its composition ensures performance in colder environments.
Which automotive applications use HNBR?
Power steering pipes and automotive oil seals.
What other applications are there?
Packer and screw pumps, and O-ring applications more generally.
How does HNBR differ from NBR?
HNBR is hydrogenated nitrile, which extends its performance beyond standard NBR, particularly in colder conditions.
Can you supply custom sizes?
Yes. Send the inside diameter, cross-section and operating conditions.
What quantities do you supply?
From maintenance quantities through to production volumes.
Related products
Other Products Buyers Look At
Industries
Sectors That Use This Product
Metal Fabrication and Machine Shops
Custom parts, tooling and the cranes that move them around the shop.
Warehousing and Heavy Industry
Lifting from 250 kg to 360 tons, indoors on a runway or outdoors on legs.
Food Packaging Lines
Depalletizing to palletizing, balanced against the filler in the middle.
Further reading
Guides That Cover This Product
Selecting an O-Ring Material NBR EPDM FKM or FFKM
Almost every seal failure is a material selection error rather than a dimensional one. The fluid and the temperature decide the elastomer, and the size is the easy part.
Quote HNBR O-Rings and Seals
Send the capacity or size you need, the quantity and the destination, and we will confirm the configuration, the lead time and a loading plan.